diff --git a/dlls/msxml3/node.c b/dlls/msxml3/node.c
index 47f5401c7c2..eadd4e96486 100644
--- a/dlls/msxml3/node.c
+++ b/dlls/msxml3/node.c
@@ -953,6 +953,15 @@ inline BYTE hex_to_byte(xmlChar c)
     return c-'a'+10;
 }
 
+inline BYTE base64_to_byte(xmlChar c)
+{
+    if(c == '+') return 62;
+    if(c == '/') return 63;
+    if(c <= '9') return c-'0'+52;
+    if(c <= 'Z') return c-'A';
+    return c-'a'+26;
+}
+
 inline HRESULT VARIANT_from_xmlChar(xmlChar *str, VARIANT *v, BSTR type)
 {
     if(!type || !lstrcmpiW(type, szString) ||
@@ -1041,6 +1050,37 @@ inline HRESULT VARIANT_from_xmlChar(xmlChar *str, VARIANT *v, BSTR type)
             ((BYTE*)V_ARRAY(v)->pvData)[i] = (hex_to_byte(str[2*i])<<4)
                 + hex_to_byte(str[2*i+1]);
     }
+    else if(!lstrcmpiW(type, szBinBase64))
+    {
+        SAFEARRAYBOUND sab;
+        int i, len;
+
+        len  = xmlStrlen(str);
+        if(str[len-2] == '=') i = 2;
+        else if(str[len-1] == '=') i = 1;
+        else i = 0;
+
+        sab.lLbound = 0;
+        sab.cElements = len/4*3-i;
+
+        V_VT(v) = (VT_ARRAY|VT_UI1);
+        V_ARRAY(v) = SafeArrayCreate(VT_UI1, 1, &sab);
+
+        if(!V_ARRAY(v))
+            return E_OUTOFMEMORY;
+
+        for(i=0; i<len/4; i++)
+        {
+            ((BYTE*)V_ARRAY(v)->pvData)[3*i] = (base64_to_byte(str[4*i])<<2)
+                + (base64_to_byte(str[4*i+1])>>4);
+            if(3*i+1 < sab.cElements)
+                ((BYTE*)V_ARRAY(v)->pvData)[3*i+1] = (base64_to_byte(str[4*i+1])<<4)
+                    + (base64_to_byte(str[4*i+2])>>2);
+            if(3*i+2 < sab.cElements)
+                ((BYTE*)V_ARRAY(v)->pvData)[3*i+2] = (base64_to_byte(str[4*i+2])<<6)
+                    + base64_to_byte(str[4*i+3]);
+        }
+    }
     else
     {
         VARIANT src;
diff --git a/dlls/msxml3/tests/domdoc.c b/dlls/msxml3/tests/domdoc.c
index d2203564d4b..d72452deb33 100644
--- a/dlls/msxml3/tests/domdoc.c
+++ b/dlls/msxml3/tests/domdoc.c
@@ -172,6 +172,7 @@ static const CHAR szTypeValueXML[] =
 "   <float dt:dt=\"float\">41221.421</float>\n"
 "   <uuid dt:dt=\"uuid\">333C7BC4-460F-11D0-BC04-0080C7055a83</uuid>\n"
 "   <binhex dt:dt=\"bin.hex\">fffca012003c</binhex>\n"
+"   <binbase64 dt:dt=\"bin.base64\">YmFzZTY0IHRlc3Q=</binbase64>\n"
 "</root>";
 
 static const CHAR szBasicTransformSSXMLPart1[] =
@@ -4308,6 +4309,23 @@ static void test_NodeTypeValue(void)
 
             IXMLDOMNode_Release(pNode);
         }
+
+        hr = IXMLDOMDocument2_selectSingleNode(doc, _bstr_("root/binbase64"), &pNode);
+        ok(hr == S_OK, "ret %08x\n", hr );
+        if(hr == S_OK)
+        {
+            BYTE bytes[] = {0x62,0x61,0x73,0x65,0x36,0x34,0x20,0x74,0x65,0x73,0x74};
+
+            hr = IXMLDOMNode_get_nodeTypedValue(pNode, &v);
+            ok(hr == S_OK, "ret %08x\n", hr );
+            ok(V_VT(&v) == (VT_ARRAY|VT_UI1), "incorrect type\n");
+            ok(V_ARRAY(&v)->rgsabound[0].cElements == 11, "incorrect array size\n");
+            if(V_ARRAY(&v)->rgsabound[0].cElements == 11)
+                ok(!memcmp(bytes, V_ARRAY(&v)->pvData, sizeof(bytes)), "incorrect value\n");
+            VariantClear(&v);
+
+            IXMLDOMNode_Release(pNode);
+        }
     }
 
     IXMLDOMDocument2_Release(doc);