diff --git a/dlls/wbemprox/builtin.c b/dlls/wbemprox/builtin.c
index 1a98b16b22c..ddec2a0daf8 100644
--- a/dlls/wbemprox/builtin.c
+++ b/dlls/wbemprox/builtin.c
@@ -395,6 +395,7 @@ static const struct column col_stdregprov[] =
     { L"GetStringValue", CIM_FLAG_ARRAY|COL_FLAG_METHOD },
     { L"SetStringValue", CIM_FLAG_ARRAY|COL_FLAG_METHOD },
     { L"SetDWORDValue",  CIM_FLAG_ARRAY|COL_FLAG_METHOD },
+    { L"DeleteKey",      CIM_FLAG_ARRAY|COL_FLAG_METHOD },
 };
 static const struct column col_systemenclosure[] =
 {
@@ -806,6 +807,7 @@ struct record_stdregprov
     class_method *getstringvalue;
     class_method *setstringvalue;
     class_method *setdwordvalue;
+    class_method *deletekey;
 };
 struct record_sysrestore
 {
@@ -912,6 +914,9 @@ static const struct record_param data_param[] =
     { L"StdRegProv", L"SetDWORDValue", 1, L"sValueName", CIM_STRING },
     { L"StdRegProv", L"SetDWORDValue", 1, L"uValue", CIM_UINT32 },
     { L"StdRegProv", L"SetDWORDValue", -1, L"ReturnValue", CIM_UINT32 },
+    { L"StdRegProv", L"DeleteKey", 1, L"hDefKey", CIM_SINT32, 0x80000002 },
+    { L"StdRegProv", L"DeleteKey", 1, L"sSubKeyName", CIM_STRING },
+    { L"StdRegProv", L"DeleteKey", -1, L"ReturnValue", CIM_UINT32 },
     { L"SystemRestore", L"Disable", 1, L"Drive", CIM_STRING },
     { L"SystemRestore", L"Disable", -1, L"ReturnValue", CIM_UINT32 },
     { L"SystemRestore", L"Enable", 1, L"Drive", CIM_STRING },
@@ -951,6 +956,7 @@ static const struct record_stdregprov data_stdregprov[] =
         reg_get_stringvalue,
         reg_set_stringvalue,
         reg_set_dwordvalue,
+        reg_delete_key,
     }
 };
 
diff --git a/dlls/wbemprox/reg.c b/dlls/wbemprox/reg.c
index 2fb12d9c28c..f021aa14af8 100644
--- a/dlls/wbemprox/reg.c
+++ b/dlls/wbemprox/reg.c
@@ -568,3 +568,57 @@ HRESULT reg_set_dwordvalue( IWbemClassObject *obj, IWbemClassObject *in, IWbemCl
     if (out_params) IWbemClassObject_Release( out_params );
     return hr;
 }
+
+static void delete_key( HKEY root, const WCHAR *subkey, VARIANT *retval )
+{
+    LONG res;
+
+    TRACE("%p, %s\n", root, debugstr_w(subkey));
+
+    res = RegDeleteKeyExW( root, subkey, 0, 0 );
+    set_variant( VT_UI4, res, NULL, retval );
+}
+
+HRESULT reg_delete_key( IWbemClassObject *obj, IWbemClassObject *in, IWbemClassObject **out )
+{
+    VARIANT defkey, subkey, retval;
+    IWbemClassObject *sig, *out_params = NULL;
+    HRESULT hr;
+
+    TRACE("%p, %p\n", in, out);
+
+    hr = IWbemClassObject_Get( in, L"hDefKey", 0, &defkey, NULL, NULL );
+    if (hr != S_OK) return hr;
+    hr = IWbemClassObject_Get( in, L"sSubKeyName", 0, &subkey, NULL, NULL );
+    if (hr != S_OK) return hr;
+
+    hr = create_signature( L"StdRegProv", L"DeleteKey", PARAM_OUT, &sig );
+    if (hr != S_OK)
+    {
+        VariantClear( &subkey );
+        return hr;
+    }
+    if (out)
+    {
+        hr = IWbemClassObject_SpawnInstance( sig, 0, &out_params );
+        if (hr != S_OK)
+        {
+            VariantClear( &subkey );
+            IWbemClassObject_Release( sig );
+            return hr;
+        }
+    }
+    delete_key( (HKEY)(INT_PTR)V_I4(&defkey), V_BSTR(&subkey), &retval );
+    if (out_params)
+        hr = IWbemClassObject_Put( out_params, L"ReturnValue", 0, &retval, CIM_UINT32 );
+
+    VariantClear( &subkey );
+    IWbemClassObject_Release( sig );
+    if (hr == S_OK && out)
+    {
+        *out = out_params;
+        IWbemClassObject_AddRef( out_params );
+    }
+    if (out_params) IWbemClassObject_Release( out_params );
+    return hr;
+}
diff --git a/dlls/wbemprox/wbemprox_private.h b/dlls/wbemprox/wbemprox_private.h
index 76ef479c3ef..bae4b5d20c5 100644
--- a/dlls/wbemprox/wbemprox_private.h
+++ b/dlls/wbemprox/wbemprox_private.h
@@ -250,6 +250,7 @@ HRESULT reg_enum_values(IWbemClassObject *, IWbemClassObject *, IWbemClassObject
 HRESULT reg_get_stringvalue(IWbemClassObject *, IWbemClassObject *, IWbemClassObject **) DECLSPEC_HIDDEN;
 HRESULT reg_set_stringvalue(IWbemClassObject *, IWbemClassObject *, IWbemClassObject **) DECLSPEC_HIDDEN;
 HRESULT reg_set_dwordvalue(IWbemClassObject *, IWbemClassObject *, IWbemClassObject **) DECLSPEC_HIDDEN;
+HRESULT reg_delete_key(IWbemClassObject *, IWbemClassObject *, IWbemClassObject **) DECLSPEC_HIDDEN;
 HRESULT service_pause_service(IWbemClassObject *, IWbemClassObject *, IWbemClassObject **) DECLSPEC_HIDDEN;
 HRESULT service_resume_service(IWbemClassObject *, IWbemClassObject *, IWbemClassObject **) DECLSPEC_HIDDEN;
 HRESULT service_start_service(IWbemClassObject *, IWbemClassObject *, IWbemClassObject **) DECLSPEC_HIDDEN;