diff --git a/dlls/jscript/dispex.c b/dlls/jscript/dispex.c
index 1c9595fb836..7a2879a98c0 100644
--- a/dlls/jscript/dispex.c
+++ b/dlls/jscript/dispex.c
@@ -1607,6 +1607,8 @@ HRESULT jsdisp_get_own_property(jsdisp_t *obj, const WCHAR *name, BOOL flags_onl
     switch(prop->type) {
     case PROP_BUILTIN:
     case PROP_JSVAL:
+        desc->mask |= PROPF_WRITABLE;
+        desc->explicit_value = TRUE;
         if(!flags_only) {
             hres = prop_get(obj, prop, &desc->value);
             if(FAILED(hres))
@@ -1618,5 +1620,84 @@ HRESULT jsdisp_get_own_property(jsdisp_t *obj, const WCHAR *name, BOOL flags_onl
     }
 
     desc->flags = prop->flags & (PROPF_ENUMERABLE | PROPF_WRITABLE | PROPF_CONFIGURABLE);
+    desc->mask |= PROPF_ENUMERABLE | PROPF_CONFIGURABLE;
+    return S_OK;
+}
+
+HRESULT jsdisp_define_property(jsdisp_t *obj, const WCHAR *name, property_desc_t *desc)
+{
+    dispex_prop_t *prop;
+    HRESULT hres;
+
+    hres = find_prop_name(obj, string_hash(name), name, &prop);
+    if(FAILED(hres))
+        return hres;
+
+    if(!prop && !(prop = alloc_prop(obj, name, PROP_DELETED, 0)))
+       return E_OUTOFMEMORY;
+
+    if(prop->type == PROP_DELETED || prop->type == PROP_PROTREF) {
+        prop->flags = desc->flags;
+        if(desc->explicit_getter || desc->explicit_setter) {
+            FIXME("accessor property\n");
+            return E_NOTIMPL;
+        }else {
+            prop->type = PROP_JSVAL;
+            if(desc->explicit_value) {
+                hres = jsval_copy(desc->value, &prop->u.val);
+                if(FAILED(hres))
+                    return hres;
+            }else {
+                prop->u.val = jsval_undefined();
+            }
+            TRACE("%s = %s\n", debugstr_w(name), debugstr_jsval(prop->u.val));
+        }
+        return S_OK;
+    }
+
+    TRACE("existing prop %s prop flags %x desc flags %x desc mask %x\n", debugstr_w(name),
+          prop->flags, desc->flags, desc->mask);
+
+    if(!(prop->flags & PROPF_CONFIGURABLE)) {
+        if(((desc->mask & PROPF_CONFIGURABLE) && (desc->flags & PROPF_CONFIGURABLE))
+           || ((desc->mask & PROPF_ENUMERABLE)
+               && ((desc->flags & PROPF_ENUMERABLE) != (prop->flags & PROPF_ENUMERABLE))))
+            return throw_type_error(obj->ctx, JS_E_NONCONFIGURABLE_REDEFINED, name);
+    }
+
+    if(desc->explicit_value || (desc->mask & PROPF_WRITABLE)) {
+        if(!(prop->flags & PROPF_CONFIGURABLE) && !(prop->flags & PROPF_WRITABLE)) {
+            if((desc->mask & PROPF_WRITABLE) && (desc->flags & PROPF_WRITABLE))
+                return throw_type_error(obj->ctx, JS_E_NONWRITABLE_MODIFIED, name);
+            if(desc->explicit_value) {
+                if(prop->type == PROP_JSVAL) {
+                    BOOL eq;
+                    hres = jsval_strict_equal(desc->value, prop->u.val, &eq);
+                    if(FAILED(hres))
+                        return hres;
+                    if(!eq)
+                        return throw_type_error(obj->ctx, JS_E_NONWRITABLE_MODIFIED, name);
+                }else {
+                    FIXME("redefinition of property type %d\n", prop->type);
+                }
+            }
+        }
+        if(desc->explicit_value) {
+            if(prop->type == PROP_JSVAL)
+                jsval_release(prop->u.val);
+            else
+                prop->type = PROP_JSVAL;
+            hres = jsval_copy(desc->value, &prop->u.val);
+            if(FAILED(hres)) {
+                prop->u.val = jsval_undefined();
+                return hres;
+            }
+        }
+    }else if(desc->explicit_getter || desc->explicit_setter) {
+        FIXME("accessor property\n");
+        return E_NOTIMPL;
+    }
+
+    prop->flags = (prop->flags & ~desc->mask) | (desc->flags & desc->mask);
     return S_OK;
 }
diff --git a/dlls/jscript/jscript.h b/dlls/jscript/jscript.h
index 4f2acc5dbd8..2beee26ad5b 100644
--- a/dlls/jscript/jscript.h
+++ b/dlls/jscript/jscript.h
@@ -294,6 +294,7 @@ HRESULT disp_delete(IDispatch*,DISPID,BOOL*) DECLSPEC_HIDDEN;
 HRESULT disp_delete_name(script_ctx_t*,IDispatch*,jsstr_t*,BOOL*) DECLSPEC_HIDDEN;
 HRESULT jsdisp_delete_idx(jsdisp_t*,DWORD) DECLSPEC_HIDDEN;
 HRESULT jsdisp_get_own_property(jsdisp_t*,const WCHAR*,BOOL,property_desc_t*) DECLSPEC_HIDDEN;
+HRESULT jsdisp_define_property(jsdisp_t*,const WCHAR*,property_desc_t*) DECLSPEC_HIDDEN;
 
 HRESULT create_builtin_function(script_ctx_t*,builtin_invoke_t,const WCHAR*,const builtin_info_t*,DWORD,
         jsdisp_t*,jsdisp_t**) DECLSPEC_HIDDEN;
@@ -378,7 +379,13 @@ typedef struct {
 
 struct _property_desc_t {
     unsigned flags;
+    unsigned mask;
+    BOOL explicit_value;
     jsval_t value;
+    BOOL explicit_getter;
+    jsdisp_t *getter;
+    BOOL explicit_setter;
+    jsdisp_t *setter;
 };
 
 typedef struct {
@@ -556,6 +563,10 @@ static inline DWORD make_grfdex(script_ctx_t *ctx, DWORD flags)
 #define JS_E_PRECISION_OUT_OF_RANGE  MAKE_JSERROR(IDS_PRECISION_OUT_OF_RANGE)
 #define JS_E_INVALID_LENGTH          MAKE_JSERROR(IDS_INVALID_LENGTH)
 #define JS_E_ARRAY_EXPECTED          MAKE_JSERROR(IDS_ARRAY_EXPECTED)
+#define JS_E_NONCONFIGURABLE_REDEFINED MAKE_JSERROR(IDS_NONCONFIGURABLE_REDEFINED)
+#define JS_E_NONWRITABLE_MODIFIED    MAKE_JSERROR(IDS_NONWRITABLE_MODIFIED)
+#define JS_E_PROP_DESC_MISMATCH      MAKE_JSERROR(IDS_PROP_DESC_MISMATCH)
+#define JS_E_INVALID_WRITABLE_PROP_DESC MAKE_JSERROR(IDS_INVALID_WRITABLE_PROP_DESC)
 
 static inline BOOL is_jscript_error(HRESULT hres)
 {
diff --git a/dlls/jscript/jscript.rc b/dlls/jscript/jscript.rc
index 0b4be7031c1..5507b56adf8 100644
--- a/dlls/jscript/jscript.rc
+++ b/dlls/jscript/jscript.rc
@@ -65,6 +65,10 @@ STRINGTABLE
     IDS_PRECISION_OUT_OF_RANGE "Precision is out of range"
     IDS_INVALID_LENGTH      "Array length must be a finite positive integer"
     IDS_ARRAY_EXPECTED      "Array object expected"
+    IDS_INVALID_WRITABLE_PROP_DESC "'writable' attribute on the property descriptor cannot be set to 'true' on this object"
+    IDS_NONCONFIGURABLE_REDEFINED  "Cannot redefine non-configurable property '|'"
+    IDS_NONWRITABLE_MODIFIED       "Cannot modify non-writable property '|'"
+    IDS_PROP_DESC_MISMATCH         "Property cannot have both accessors and a value"
 }
 
 LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
diff --git a/dlls/jscript/object.c b/dlls/jscript/object.c
index 315c846b084..84d36c94486 100644
--- a/dlls/jscript/object.c
+++ b/dlls/jscript/object.c
@@ -34,6 +34,7 @@ static const WCHAR isPrototypeOfW[] = {'i','s','P','r','o','t','o','t','y','p','
 
 static const WCHAR getOwnPropertyDescriptorW[] =
     {'g','e','t','O','w','n','P','r','o','p','e','r','t','y','D','e','s','c','r','i','p','t','o','r',0};
+static const WCHAR definePropertyW[] = {'d','e','f','i','n','e','P','r','o','p','e','r','t','y',0};
 
 static const WCHAR default_valueW[] = {'[','o','b','j','e','c','t',' ','O','b','j','e','c','t',']',0};
 
@@ -41,6 +42,8 @@ static const WCHAR configurableW[] = {'c','o','n','f','i','g','u','r','a','b','l
 static const WCHAR enumerableW[] = {'e','n','u','m','e','r','a','b','l','e',0};
 static const WCHAR valueW[] = {'v','a','l','u','e',0};
 static const WCHAR writableW[] = {'w','r','i','t','a','b','l','e',0};
+static const WCHAR getW[] = {'g','e','t',0};
+static const WCHAR setW[] = {'s','e','t',0};
 
 static HRESULT Object_toString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
         jsval_t *r)
@@ -263,7 +266,185 @@ static const builtin_info_t ObjectInst_info = {
 
 static void release_property_descriptor(property_desc_t *desc)
 {
-    jsval_release(desc->value);
+    if(desc->explicit_value)
+        jsval_release(desc->value);
+    if(desc->getter)
+        jsdisp_release(desc->getter);
+    if(desc->setter)
+        jsdisp_release(desc->setter);
+}
+
+static HRESULT to_property_descriptor(script_ctx_t *ctx, jsdisp_t *attr_obj, property_desc_t *desc)
+{
+    DISPID id;
+    jsval_t v;
+    BOOL b;
+    HRESULT hres;
+
+    memset(desc, 0, sizeof(*desc));
+    desc->value = jsval_undefined();
+
+    hres = jsdisp_get_id(attr_obj, enumerableW, 0, &id);
+    if(SUCCEEDED(hres)) {
+        desc->mask |= PROPF_ENUMERABLE;
+        hres = jsdisp_propget(attr_obj, id, &v);
+        if(FAILED(hres))
+            return hres;
+        hres = to_boolean(v, &b);
+        jsval_release(v);
+        if(FAILED(hres))
+            return hres;
+        if(b)
+            desc->flags |= PROPF_ENUMERABLE;
+    }else if(hres != DISP_E_UNKNOWNNAME) {
+        return hres;
+    }
+
+    hres = jsdisp_get_id(attr_obj, configurableW, 0, &id);
+    if(SUCCEEDED(hres)) {
+        desc->mask |= PROPF_CONFIGURABLE;
+        hres = jsdisp_propget(attr_obj, id, &v);
+        if(FAILED(hres))
+            return hres;
+        hres = to_boolean(v, &b);
+        jsval_release(v);
+        if(FAILED(hres))
+            return hres;
+        if(b)
+            desc->flags |= PROPF_CONFIGURABLE;
+    }else if(hres != DISP_E_UNKNOWNNAME) {
+        return hres;
+    }
+
+    hres = jsdisp_get_id(attr_obj, valueW, 0, &id);
+    if(SUCCEEDED(hres)) {
+        hres = jsdisp_propget(attr_obj, id, &desc->value);
+        if(FAILED(hres))
+            return hres;
+        desc->explicit_value = TRUE;
+    }else if(hres != DISP_E_UNKNOWNNAME) {
+        return hres;
+    }
+
+    hres = jsdisp_get_id(attr_obj, writableW, 0, &id);
+    if(SUCCEEDED(hres)) {
+        desc->mask |= PROPF_WRITABLE;
+        hres = jsdisp_propget(attr_obj, id, &v);
+        if(SUCCEEDED(hres)) {
+            hres = to_boolean(v, &b);
+            jsval_release(v);
+            if(SUCCEEDED(hres) && b)
+                desc->flags |= PROPF_WRITABLE;
+        }
+    }else if(hres == DISP_E_UNKNOWNNAME) {
+        hres = S_OK;
+    }
+    if(FAILED(hres)) {
+        release_property_descriptor(desc);
+        return hres;
+    }
+
+    hres = jsdisp_get_id(attr_obj, getW, 0, &id);
+    if(SUCCEEDED(hres)) {
+        desc->explicit_getter = TRUE;
+        hres = jsdisp_propget(attr_obj, id, &v);
+        if(SUCCEEDED(hres) && !is_undefined(v)) {
+            if(!is_object_instance(v)) {
+                FIXME("getter is not an object\n");
+                jsval_release(v);
+                hres = E_FAIL;
+            }else {
+                /* FIXME: Check IsCallable */
+                desc->getter = to_jsdisp(get_object(v));
+                if(!desc->getter)
+                    FIXME("getter is not JS object\n");
+            }
+        }
+    }else if(hres == DISP_E_UNKNOWNNAME) {
+        hres = S_OK;
+    }
+    if(FAILED(hres)) {
+        release_property_descriptor(desc);
+        return hres;
+    }
+
+    hres = jsdisp_get_id(attr_obj, setW, 0, &id);
+    if(SUCCEEDED(hres)) {
+        desc->explicit_setter = TRUE;
+        hres = jsdisp_propget(attr_obj, id, &v);
+        if(SUCCEEDED(hres) && !is_undefined(v)) {
+            if(!is_object_instance(v)) {
+                FIXME("setter is not an object\n");
+                jsval_release(v);
+                hres = E_FAIL;
+            }else {
+                /* FIXME: Check IsCallable */
+                desc->setter = to_jsdisp(get_object(v));
+                if(!desc->setter)
+                    FIXME("setter is not JS object\n");
+            }
+        }
+    }else if(hres == DISP_E_UNKNOWNNAME) {
+        hres = S_OK;
+    }
+    if(FAILED(hres)) {
+        release_property_descriptor(desc);
+        return hres;
+    }
+
+    if(desc->explicit_getter || desc->explicit_setter) {
+        if(desc->explicit_value)
+            hres = throw_type_error(ctx, JS_E_PROP_DESC_MISMATCH, NULL);
+        else if(desc->mask & PROPF_WRITABLE)
+            hres = throw_type_error(ctx, JS_E_INVALID_WRITABLE_PROP_DESC, NULL);
+    }
+
+    if(FAILED(hres))
+        release_property_descriptor(desc);
+    return hres;
+}
+
+static HRESULT Object_defineProperty(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
+                                     unsigned argc, jsval_t *argv, jsval_t *r)
+{
+    property_desc_t prop_desc;
+    jsdisp_t *obj, *attr_obj;
+    const WCHAR *name;
+    jsstr_t *name_str;
+    HRESULT hres;
+
+    TRACE("\n");
+
+    if(argc < 1 || !is_object_instance(argv[0]))
+        return throw_type_error(ctx, JS_E_OBJECT_EXPECTED, NULL);
+    obj = to_jsdisp(get_object(argv[0]));
+    if(!obj) {
+        FIXME("not implemented non-JS object\n");
+        return E_NOTIMPL;
+    }
+
+    hres = to_flat_string(ctx, argc >= 2 ? argv[1] : jsval_undefined(), &name_str, &name);
+    if(FAILED(hres))
+        return hres;
+
+    if(argc >= 3 && is_object_instance(argv[2])) {
+        attr_obj = to_jsdisp(get_object(argv[2]));
+        if(attr_obj) {
+            hres = to_property_descriptor(ctx, attr_obj, &prop_desc);
+        }else {
+            FIXME("not implemented non-JS object\n");
+            hres = E_NOTIMPL;
+        }
+    }else {
+        hres = throw_type_error(ctx, JS_E_OBJECT_EXPECTED, NULL);
+    }
+    jsstr_release(name_str);
+    if(FAILED(hres))
+        return hres;
+
+    hres = jsdisp_define_property(obj, name, &prop_desc);
+    release_property_descriptor(&prop_desc);
+    return hres;
 }
 
 static HRESULT Object_getOwnPropertyDescriptor(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
@@ -302,10 +483,18 @@ static HRESULT Object_getOwnPropertyDescriptor(script_ctx_t *ctx, vdisp_t *jsthi
     if(FAILED(hres))
         return hres;
 
-    hres = jsdisp_propput_name(desc_obj, valueW, prop_desc.value);
-    if(SUCCEEDED(hres))
-        hres = jsdisp_propput_name(desc_obj, writableW,
-                                   jsval_bool(!!(prop_desc.flags & PROPF_WRITABLE)));
+    if(prop_desc.explicit_getter || prop_desc.explicit_setter) {
+        hres = jsdisp_propput_name(desc_obj, getW, prop_desc.getter
+                                   ? jsval_obj(prop_desc.getter) : jsval_undefined());
+        if(SUCCEEDED(hres))
+            hres = jsdisp_propput_name(desc_obj, setW, prop_desc.setter
+                                       ? jsval_obj(prop_desc.setter) : jsval_undefined());
+    }else {
+        hres = jsdisp_propput_name(desc_obj, valueW, prop_desc.value);
+        if(SUCCEEDED(hres))
+            hres = jsdisp_propput_name(desc_obj, writableW,
+                                       jsval_bool(!!(prop_desc.flags & PROPF_WRITABLE)));
+    }
     if(SUCCEEDED(hres))
         hres = jsdisp_propput_name(desc_obj, enumerableW,
                                    jsval_bool(!!(prop_desc.flags & PROPF_ENUMERABLE)));
@@ -322,6 +511,7 @@ static HRESULT Object_getOwnPropertyDescriptor(script_ctx_t *ctx, vdisp_t *jsthi
 }
 
 static const builtin_prop_t ObjectConstr_props[] = {
+    {definePropertyW,           Object_defineProperty,              PROPF_ES5|PROPF_METHOD|2},
     {getOwnPropertyDescriptorW, Object_getOwnPropertyDescriptor,    PROPF_ES5|PROPF_METHOD|2}
 };
 
diff --git a/dlls/jscript/resource.h b/dlls/jscript/resource.h
index 9c0cebf14ed..d15dd7a0339 100644
--- a/dlls/jscript/resource.h
+++ b/dlls/jscript/resource.h
@@ -63,3 +63,9 @@
 #define IDS_PRECISION_OUT_OF_RANGE          0x13A3
 #define IDS_INVALID_LENGTH                  0x13A5
 #define IDS_ARRAY_EXPECTED                  0x13A7
+#define IDS_INVALID_WRITABLE_PROP_DESC      0x13AC
+#define IDS_NONCONFIGURABLE_REDEFINED       0x13D6
+#define IDS_NONWRITABLE_MODIFIED            0x13D7
+/* FIXME: This is not compatible with native, but we would
+ * conflict with IDS_UNSUPPORTED_ACTION otherwise */
+#define IDS_PROP_DESC_MISMATCH              0x1F00
diff --git a/dlls/mshtml/tests/documentmode.js b/dlls/mshtml/tests/documentmode.js
index 1525b095cf2..e30aa93b83a 100644
--- a/dlls/mshtml/tests/documentmode.js
+++ b/dlls/mshtml/tests/documentmode.js
@@ -143,6 +143,7 @@ function test_javascript() {
     /* FIXME: IE8 implements weird semi-functional property descriptors. */
     if(v != 8) {
         test_exposed("getOwnPropertyDescriptor", Object, v >= 8);
+        test_exposed("defineProperty", Object, v >= 8);
     }
 
     test_parses("if(false) { o.default; }", v >= 9);
diff --git a/dlls/mshtml/tests/es5.js b/dlls/mshtml/tests/es5.js
index a769a499ff8..92024cf87d4 100644
--- a/dlls/mshtml/tests/es5.js
+++ b/dlls/mshtml/tests/es5.js
@@ -16,6 +16,11 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+var JS_E_PROP_DESC_MISMATCH = 0x800a01bd;
+var JS_E_INVALID_WRITABLE_PROP_DESC = 0x800a13ac;
+var JS_E_NONCONFIGURABLE_REDEFINED = 0x800a13d6;
+var JS_E_NONWRITABLE_MODIFIED = 0x800a13d7;
+
 function test_date_now() {
     var now = Date.now();
     var time = (new Date()).getTime();
@@ -188,11 +193,103 @@ function test_getOwnPropertyDescriptor() {
     next_test();
 }
 
+function test_defineProperty() {
+    function expect_exception(func, expected_number) {
+        try {
+            func();
+        }catch(e) {
+            var n = e.number + 0x100000000; /* make it unsigned like HRESULT */
+            todo_wine_if(expected_number == JS_E_PROP_DESC_MISMATCH).
+            ok(n === expected_number, "got exception " + n.toString(16)
+               + " expected " + expected_number.toString(16));
+            ok(e.name === "TypeError", "e.name = " + e.name);
+            return;
+        }
+        ok(false, "expected exception");
+    }
+
+    var obj = new Object();
+    Object.defineProperty(obj, "test", {});
+    ok("test" in obj, "test is not in obj");
+    test_own_data_prop_desc(obj, "test", false, false, false);
+    ok(obj.test === undefined, "obj.test = " + obj.test);
+
+    Object.defineProperty(obj, "all", {writable: true, enumerable: true, configurable: true, value: 1});
+    test_own_data_prop_desc(obj, "all", true, true, true);
+    ok(obj.all === 1, "obj.test = " + obj.test);
+
+    Object.defineProperty(obj, "all", {writable: false});
+    test_own_data_prop_desc(obj, "all", false, true, true);
+    ok(obj.all === 1, "obj.test = " + obj.test);
+
+    Object.defineProperty(obj, "notConf", {writable: true, enumerable: true, configurable: false, value: 1});
+    test_own_data_prop_desc(obj, "notConf", true, true, false);
+
+    expect_exception(function() {
+        Object.defineProperty(obj, "notConf",
+                              {writable: true, enumerable: true, configurable: true, value: 1});
+    }, JS_E_NONCONFIGURABLE_REDEFINED);
+
+    expect_exception(function() {
+        Object.defineProperty(obj, "notConf",
+                              {writable: true, enumerable: false, configurable: false, value: 1});
+    }, JS_E_NONCONFIGURABLE_REDEFINED);
+
+    Object.defineProperty(obj, "notConf",
+                          {writable: true, enumerable: true, configurable: false, value: 2});
+    test_own_data_prop_desc(obj, "notConf", true, true, false);
+
+    Object.defineProperty(obj, "notConf", {writable: true, value: 2});
+    test_own_data_prop_desc(obj, "notConf", true, true, false);
+
+    Object.defineProperty(obj, "notConf2",
+                          {writable: false, enumerable: false, configurable: false, value: 1});
+    test_own_data_prop_desc(obj, "notConf2", false, false, false);
+    obj.notConf2 = 2;
+    ok(obj.notConf2 === 1, "obj.notConf2 = " + obj.notConf2)
+
+    expect_exception(function() {
+        Object.defineProperty(obj, "notConf2",
+                              {writable: false, enumerable: false, configurable: true, value: 1});
+    }, JS_E_NONCONFIGURABLE_REDEFINED);
+
+    expect_exception(function() {
+        Object.defineProperty(obj, "notConf2",
+                              {writable: false, enumerable: true, configurable: false, value: 1});
+    }, JS_E_NONCONFIGURABLE_REDEFINED);
+
+    expect_exception(function() {
+        Object.defineProperty(obj, "notConf2", {writable: true, value: 1});
+    }, JS_E_NONWRITABLE_MODIFIED);
+
+    expect_exception(function() {
+        Object.defineProperty(obj, "notConf2", {value: 2});
+    }, JS_E_NONWRITABLE_MODIFIED);
+
+    Object.defineProperty(obj, "notConf2",
+                          {writable: false, enumerable: false, configurable: false, value: 1});
+    test_own_data_prop_desc(obj, "notConf2", false, false, false);
+
+    Object.defineProperty(obj, "notConf2", {writable: false, value: 1});
+    test_own_data_prop_desc(obj, "notConf2", false, false, false);
+
+    expect_exception(function() {
+        Object.defineProperty(obj, "invaliddesc", {get: undefined, value: 1});
+    }, JS_E_PROP_DESC_MISMATCH);
+
+    expect_exception(function() {
+        Object.defineProperty(obj, "invaliddesc", {set: undefined, writable: true});
+    }, JS_E_INVALID_WRITABLE_PROP_DESC);
+
+    next_test();
+}
+
 var tests = [
     test_date_now,
     test_toISOString,
     test_indexOf,
     test_isArray,
     test_identifier_keywords,
-    test_getOwnPropertyDescriptor
+    test_getOwnPropertyDescriptor,
+    test_defineProperty
 ];
diff --git a/dlls/mshtml/tests/winetest.js b/dlls/mshtml/tests/winetest.js
index 3f1b38b2b59..e5fe867017f 100644
--- a/dlls/mshtml/tests/winetest.js
+++ b/dlls/mshtml/tests/winetest.js
@@ -57,3 +57,7 @@ var todo_wine = {
         return external.todo_wine_ok(b,m);
     }
 };
+
+function todo_wine_if(expr) {
+    return expr ? todo_wine : { ok: ok };
+}
diff --git a/po/ar.po b/po/ar.po
index e3baa53bfcc..90638b7a7eb 100644
--- a/po/ar.po
+++ b/po/ar.po
@@ -3684,6 +3684,24 @@ msgstr "يجب أن يكون طول المصفوفة عدد صحيح موجب م
 msgid "Array object expected"
 msgstr "عنصر مصفوفة متوقع"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/bg.po b/po/bg.po
index f357bdd537f..31faacb4a08 100644
--- a/po/bg.po
+++ b/po/bg.po
@@ -3703,6 +3703,24 @@ msgstr ""
 msgid "Array object expected"
 msgstr ""
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/ca.po b/po/ca.po
index c39a36a4f4b..9565b8f570a 100644
--- a/po/ca.po
+++ b/po/ca.po
@@ -3702,6 +3702,24 @@ msgstr "La longitud del vector ha de ser un nombre enter positiu finit"
 msgid "Array object expected"
 msgstr "S'esperava un objecte Array"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr "DLL de nucli del Wine"
diff --git a/po/cs.po b/po/cs.po
index f9116d3b094..921c825b289 100644
--- a/po/cs.po
+++ b/po/cs.po
@@ -3638,6 +3638,24 @@ msgstr "Rozměr pole musí být konečné kladné celé číslo"
 msgid "Array object expected"
 msgstr "Očekáván objekt typu pole"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/da.po b/po/da.po
index 0da339a8ae9..aac34f4f9da 100644
--- a/po/da.po
+++ b/po/da.po
@@ -3725,6 +3725,24 @@ msgstr "Array længde skal være et endeligt positivt heltal"
 msgid "Array object expected"
 msgstr "Array objekt forventet"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/de.po b/po/de.po
index 28dd97029ff..b7037178953 100644
--- a/po/de.po
+++ b/po/de.po
@@ -3693,6 +3693,24 @@ msgstr "Array-Größe muss eine natürliche Zahl sein"
 msgid "Array object expected"
 msgstr "Array-Objekt erwartet"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr "Wine-Kernel-DLL"
diff --git a/po/el.po b/po/el.po
index cec289cc350..4374afe2221 100644
--- a/po/el.po
+++ b/po/el.po
@@ -3623,6 +3623,24 @@ msgstr ""
 msgid "Array object expected"
 msgstr ""
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/en.po b/po/en.po
index 4aa6cc43414..e23d575f920 100644
--- a/po/en.po
+++ b/po/en.po
@@ -3685,6 +3685,26 @@ msgstr "Array length must be a finite positive integer"
 msgid "Array object expected"
 msgstr "Array object expected"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr "Cannot redefine non-configurable property '|'"
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr "Cannot modify non-writable property '|'"
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr "Property cannot have both accessors and a value"
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr "Wine kernel DLL"
diff --git a/po/en_US.po b/po/en_US.po
index d8aea4aa7ef..79e8cd9b487 100644
--- a/po/en_US.po
+++ b/po/en_US.po
@@ -3685,6 +3685,26 @@ msgstr "Array length must be a finite positive integer"
 msgid "Array object expected"
 msgstr "Array object expected"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr "Cannot redefine non-configurable property '|'"
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr "Cannot modify non-writable property '|'"
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr "Property cannot have both accessors and a value"
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr "Wine kernel DLL"
diff --git a/po/eo.po b/po/eo.po
index abef45b2901..13036130ae1 100644
--- a/po/eo.po
+++ b/po/eo.po
@@ -3607,6 +3607,24 @@ msgstr ""
 msgid "Array object expected"
 msgstr ""
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/es.po b/po/es.po
index b06271103db..2cdcb05f5ad 100644
--- a/po/es.po
+++ b/po/es.po
@@ -3734,6 +3734,24 @@ msgstr "La longitud del array debe ser un entero positivo finito"
 msgid "Array object expected"
 msgstr "Objeto array esperado"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/fa.po b/po/fa.po
index e26a6340c50..22d5a464c55 100644
--- a/po/fa.po
+++ b/po/fa.po
@@ -3661,6 +3661,24 @@ msgstr ""
 msgid "Array object expected"
 msgstr ""
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/fi.po b/po/fi.po
index 5da10ac9b4c..4bc100e7fcd 100644
--- a/po/fi.po
+++ b/po/fi.po
@@ -3679,6 +3679,24 @@ msgstr "Taulukon pituuden täytyy olla positiivinen kokonaisluku"
 msgid "Array object expected"
 msgstr "Odotettiin taulukkoa"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr "Winen ydin-DLL"
diff --git a/po/fr.po b/po/fr.po
index 68fbe278d6c..33c1d58e7c3 100644
--- a/po/fr.po
+++ b/po/fr.po
@@ -3709,6 +3709,24 @@ msgstr "La longueur d'un tableau doit être un entier positif"
 msgid "Array object expected"
 msgstr "Objet tableau attendu"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/he.po b/po/he.po
index a0db7ecc90f..4961858b775 100644
--- a/po/he.po
+++ b/po/he.po
@@ -3695,6 +3695,24 @@ msgstr ""
 msgid "Array object expected"
 msgstr ""
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/hi.po b/po/hi.po
index db15ae256e7..186a25dd53b 100644
--- a/po/hi.po
+++ b/po/hi.po
@@ -3594,6 +3594,24 @@ msgstr ""
 msgid "Array object expected"
 msgstr ""
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/hr.po b/po/hr.po
index e315a7d1d44..1a5e952489d 100644
--- a/po/hr.po
+++ b/po/hr.po
@@ -3689,6 +3689,24 @@ msgstr "Duljina niza treba biti konačan prirodan broj"
 msgid "Array object expected"
 msgstr "Očekivan niz objekata"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/hu.po b/po/hu.po
index d127093d74f..e88dcff5134 100644
--- a/po/hu.po
+++ b/po/hu.po
@@ -3743,6 +3743,24 @@ msgstr "A tömb hosszának egy véges pozitív egész számnak kell lennie"
 msgid "Array object expected"
 msgstr "Tömb objektumot vártam"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/it.po b/po/it.po
index b9660dcbcfe..dc9fec69c7c 100644
--- a/po/it.po
+++ b/po/it.po
@@ -3751,6 +3751,24 @@ msgstr "La lunghezza dell'array deve essere un intero finito e positivo"
 msgid "Array object expected"
 msgstr "Previsto un oggetto array"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/ja.po b/po/ja.po
index 91959f2f39e..1d9f9a534fd 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -3677,6 +3677,24 @@ msgstr "配列の長さは有限の正整数でなければなりません"
 msgid "Array object expected"
 msgstr "配列オブジェクトを期待していました"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/ko.po b/po/ko.po
index 3c8cbf97775..aac1897ffed 100644
--- a/po/ko.po
+++ b/po/ko.po
@@ -3692,6 +3692,24 @@ msgstr "배열 길이는 반드시  한정된 양의 정수이어야 함"
 msgid "Array object expected"
 msgstr "배열 객체가 필요함"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/lt.po b/po/lt.po
index 6ee4a36f2ef..edf843e07c8 100644
--- a/po/lt.po
+++ b/po/lt.po
@@ -3688,6 +3688,24 @@ msgstr "Masyvo dydis turi būti teigiamas sveikasis skaičius"
 msgid "Array object expected"
 msgstr "Tikėtasi masyvo objekto"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr "Wine branduolio DLL"
diff --git a/po/ml.po b/po/ml.po
index 154eb40e55d..fec3dbbcc54 100644
--- a/po/ml.po
+++ b/po/ml.po
@@ -3594,6 +3594,24 @@ msgstr ""
 msgid "Array object expected"
 msgstr ""
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/nb_NO.po b/po/nb_NO.po
index 83ac42f6819..b0912a7b424 100644
--- a/po/nb_NO.po
+++ b/po/nb_NO.po
@@ -3691,6 +3691,24 @@ msgstr "Rekkens lengde må være et endelig, positivt tall"
 msgid "Array object expected"
 msgstr "Forventet rekke-objekt"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr "Wine kjerne-DLL"
diff --git a/po/nl.po b/po/nl.po
index 1ffce8bf66c..331c00dcd28 100644
--- a/po/nl.po
+++ b/po/nl.po
@@ -3724,6 +3724,24 @@ msgstr "Array lengte moet een eindig, positief geheel getal zijn"
 msgid "Array object expected"
 msgstr "Array object verwacht"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/or.po b/po/or.po
index 49fb2fb8b7c..231e1c45234 100644
--- a/po/or.po
+++ b/po/or.po
@@ -3594,6 +3594,24 @@ msgstr ""
 msgid "Array object expected"
 msgstr ""
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/pa.po b/po/pa.po
index e8c651eff05..a5be738c9c8 100644
--- a/po/pa.po
+++ b/po/pa.po
@@ -3594,6 +3594,24 @@ msgstr ""
 msgid "Array object expected"
 msgstr ""
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/pl.po b/po/pl.po
index b6fc0de38ea..aa4480f34c3 100644
--- a/po/pl.po
+++ b/po/pl.po
@@ -3703,6 +3703,24 @@ msgstr "Długość tablicy musi być skończoną dodatnią liczbą stałą"
 msgid "Array object expected"
 msgstr "Oczekiwany obiekt tablicowy"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr "DLL jądra WINE"
diff --git a/po/pt_BR.po b/po/pt_BR.po
index 086e6373e17..d71377adfa5 100644
--- a/po/pt_BR.po
+++ b/po/pt_BR.po
@@ -3697,6 +3697,24 @@ msgstr "Tamanho do vetor tem que ser um inteiro finito positivo"
 msgid "Array object expected"
 msgstr "Objeto tipo vetor esperado"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/pt_PT.po b/po/pt_PT.po
index 06e7974f85d..14fad2961dd 100644
--- a/po/pt_PT.po
+++ b/po/pt_PT.po
@@ -3707,6 +3707,24 @@ msgstr "Tamanho do vector tem de ser um inteiro finito positivo"
 msgid "Array object expected"
 msgstr "Objecto Array esperado"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/rm.po b/po/rm.po
index 6cce7d18ea1..ec689a0f757 100644
--- a/po/rm.po
+++ b/po/rm.po
@@ -3622,6 +3622,24 @@ msgstr ""
 msgid "Array object expected"
 msgstr ""
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/ro.po b/po/ro.po
index 60ac147f6af..8ba34830bc3 100644
--- a/po/ro.po
+++ b/po/ro.po
@@ -3664,6 +3664,24 @@ msgstr "Lungimea unei matrice trebuie să fie un număr întreg pozitiv"
 msgid "Array object expected"
 msgstr "Se așteaptă un obiect matrice"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/ru.po b/po/ru.po
index 146b8dda2c5..002fa4cc5e3 100644
--- a/po/ru.po
+++ b/po/ru.po
@@ -3693,6 +3693,24 @@ msgstr "Длиной массива должно быть конечное по
 msgid "Array object expected"
 msgstr "Ожидается объект типа «Array»"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr "Библиотека ядра Wine"
diff --git a/po/sk.po b/po/sk.po
index ea16f4fe885..b65258ba3e8 100644
--- a/po/sk.po
+++ b/po/sk.po
@@ -3646,6 +3646,24 @@ msgstr ""
 msgid "Array object expected"
 msgstr ""
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/sl.po b/po/sl.po
index 39755ff92dd..827c71845ae 100644
--- a/po/sl.po
+++ b/po/sl.po
@@ -3745,6 +3745,24 @@ msgstr "Dolžina polja mora bit pozitivno celo število"
 msgid "Array object expected"
 msgstr "Pričakovan je bil predmet polja"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/sr_RS@cyrillic.po b/po/sr_RS@cyrillic.po
index 21d50b13d0c..ec21cd33b4c 100644
--- a/po/sr_RS@cyrillic.po
+++ b/po/sr_RS@cyrillic.po
@@ -3733,6 +3733,24 @@ msgstr "Низ дужине мора бити коначан позитиван
 msgid "Array object expected"
 msgstr "Очекивани низ објекта"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/sr_RS@latin.po b/po/sr_RS@latin.po
index afdbeb5eaf5..0f73b614d4d 100644
--- a/po/sr_RS@latin.po
+++ b/po/sr_RS@latin.po
@@ -3810,6 +3810,24 @@ msgstr "Niz dužine mora biti konačan pozitivan ceo broj"
 msgid "Array object expected"
 msgstr "Očekivani niz objekta"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/sv.po b/po/sv.po
index 8cd4011dbf7..a1d46176c1a 100644
--- a/po/sv.po
+++ b/po/sv.po
@@ -3686,6 +3686,24 @@ msgstr "Array-längd måste vara ett positivt ändligt heltal"
 msgid "Array object expected"
 msgstr "Array-objekt förväntades"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr "Wine-kärn-DLL"
diff --git a/po/te.po b/po/te.po
index 5dc67655e36..ca3b8bc862f 100644
--- a/po/te.po
+++ b/po/te.po
@@ -3594,6 +3594,24 @@ msgstr ""
 msgid "Array object expected"
 msgstr ""
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/th.po b/po/th.po
index 85b5f802dd9..8d6ed511679 100644
--- a/po/th.po
+++ b/po/th.po
@@ -3641,6 +3641,24 @@ msgstr ""
 msgid "Array object expected"
 msgstr ""
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/tr.po b/po/tr.po
index 3afbb82b153..271a3607788 100644
--- a/po/tr.po
+++ b/po/tr.po
@@ -3686,6 +3686,24 @@ msgstr "Dizi adı pozitif sonlu bir sayı olmalıdır"
 msgid "Array object expected"
 msgstr "Beklenen dizi nesnesi"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr "Wine çekirdek DLL'si"
diff --git a/po/uk.po b/po/uk.po
index c50f0de0a9b..d8ca3ff5c58 100644
--- a/po/uk.po
+++ b/po/uk.po
@@ -3695,6 +3695,24 @@ msgstr "Довжиною масиву повинне бути скінченне
 msgid "Array object expected"
 msgstr "Очікується об'єкт Array"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr "Бібліотека ядра Wine"
diff --git a/po/wa.po b/po/wa.po
index 9b7b0829f50..9874fece81d 100644
--- a/po/wa.po
+++ b/po/wa.po
@@ -3650,6 +3650,24 @@ msgstr ""
 msgid "Array object expected"
 msgstr ""
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/wine.pot b/po/wine.pot
index 7c71e41c320..ec0dec34ca1 100644
--- a/po/wine.pot
+++ b/po/wine.pot
@@ -3554,6 +3554,24 @@ msgstr ""
 msgid "Array object expected"
 msgstr ""
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""
diff --git a/po/zh_CN.po b/po/zh_CN.po
index 90f54425027..1f95335019c 100644
--- a/po/zh_CN.po
+++ b/po/zh_CN.po
@@ -3632,6 +3632,24 @@ msgstr "数组的长度必须为一个有限正整数"
 msgid "Array object expected"
 msgstr "期望得到 Array 对象"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr "Wine kernel DLL"
diff --git a/po/zh_TW.po b/po/zh_TW.po
index ecb24a9e26e..ea823324b8b 100644
--- a/po/zh_TW.po
+++ b/po/zh_TW.po
@@ -3654,6 +3654,24 @@ msgstr "陣列長度必須是有限正整數"
 msgid "Array object expected"
 msgstr "預期為陣列物件"
 
+#: jscript.rc:69
+msgid ""
+"'writable' attribute on the property descriptor cannot be set to 'true' on "
+"this object"
+msgstr ""
+
+#: jscript.rc:70
+msgid "Cannot redefine non-configurable property '|'"
+msgstr ""
+
+#: jscript.rc:71
+msgid "Cannot modify non-writable property '|'"
+msgstr ""
+
+#: jscript.rc:72
+msgid "Property cannot have both accessors and a value"
+msgstr ""
+
 #: ../../include/wine/wine_common_ver.rc:129
 msgid "Wine kernel DLL"
 msgstr ""