diff --git a/dlls/msxml3/httprequest.c b/dlls/msxml3/httprequest.c
index 3a3e0d60c1a..6ff0f96873a 100644
--- a/dlls/msxml3/httprequest.c
+++ b/dlls/msxml3/httprequest.c
@@ -317,8 +317,6 @@ static HRESULT WINAPI BindStatusCallback_OnObjectAvailable(IBindStatusCallback *
     return E_NOTIMPL;
 }
 
-#undef STATUSCLB_THIS
-
 static const IBindStatusCallbackVtbl BindStatusCallbackVtbl = {
     BindStatusCallback_QueryInterface,
     BindStatusCallback_AddRef,
@@ -402,8 +400,6 @@ static HRESULT WINAPI BSCHttpNegotiate_OnResponse(IHttpNegotiate *iface, DWORD c
     return S_OK;
 }
 
-#undef HTTPNEG2_THIS
-
 static const IHttpNegotiateVtbl BSCHttpNegotiateVtbl = {
     BSCHttpNegotiate_QueryInterface,
     BSCHttpNegotiate_AddRef,
diff --git a/dlls/msxml3/regsvr.c b/dlls/msxml3/regsvr.c
index c528ec451a8..ca1cc12cb88 100644
--- a/dlls/msxml3/regsvr.c
+++ b/dlls/msxml3/regsvr.c
@@ -540,6 +540,22 @@ static struct regsvr_coclass const coclass_list[] = {
 	"Microsoft.XMLHTTP",
 	"1.0"
     },
+    {   &CLSID_XMLHTTP26,
+	"XML HTTP 2.6",
+	NULL,
+	"msxml3.dll",
+	"Apartment",
+	"Msxml2.XMLHTTP.2.6",
+	"2.6"
+    },
+    {   &CLSID_XMLHTTP30,
+	"XML HTTP 3.0",
+	NULL,
+	"msxml3.dll",
+	"Apartment",
+	"Msxml2.XMLHTTP.3.0",
+	"3.0"
+    },
     {   &CLSID_XMLDSOControl,
 	"XML Data Source Object",
 	NULL,
@@ -701,6 +717,16 @@ static struct progid const progid_list[] = {
 	&CLSID_XMLHTTPRequest,
 	NULL
     },
+    {   "Msxml2.XMLHTTP.2.6",
+	"XML HTTP 2.6",
+	&CLSID_XMLHTTP26,
+	NULL
+    },
+    {   "Msxml2.XMLHTTP.3.0",
+	"XML HTTP 3.0",
+	&CLSID_XMLHTTP30,
+	NULL
+    },
     {   "Microsoft.XMLDSO",
 	"XML Data Source Object",
 	&CLSID_XMLDSOControl,
diff --git a/dlls/msxml4/regsvr.c b/dlls/msxml4/regsvr.c
index e4b1a0d3d34..a89683ffb1c 100644
--- a/dlls/msxml4/regsvr.c
+++ b/dlls/msxml4/regsvr.c
@@ -385,6 +385,14 @@ static struct regsvr_coclass const coclass_list[] = {
     "Microsoft.FreeThreadedDOMDocument4.0",
     "4.0"
     },
+    {   &CLSID_XMLHTTP40,
+    "XML HTTP 4.0",
+    NULL,
+    "msxml4.dll",
+    "Apartment",
+    "Msxml2.XMLHTTP.4.0",
+    "4.0"
+    },
     { NULL }			/* list terminator */
 };
 
@@ -397,6 +405,11 @@ static struct progid const progid_list[] = {
 	&CLSID_DOMDocument40,
 	NULL
     },
+    {   "Msxml2.XMLHTTP.4.0",
+	"XML HTTP 4.0",
+	&CLSID_XMLHTTP40,
+	NULL
+    },
     {   "Msxml2.SAXXMLReader.4.0",
 	"SAX XML Reader 4.0",
 	&CLSID_SAXXMLReader40,
diff --git a/dlls/msxml6/regsvr.c b/dlls/msxml6/regsvr.c
index 872015de62c..70a6fc4a3a3 100644
--- a/dlls/msxml6/regsvr.c
+++ b/dlls/msxml6/regsvr.c
@@ -346,6 +346,14 @@ static struct regsvr_coclass const coclass_list[] = {
 	"Msxml2.DOMDocument",
 	"6.0"
     },
+    {   &CLSID_XMLHTTP60,
+	"XML HTTP 6.0",
+	NULL,
+	"msxml6.dll",
+	"Apartment",
+	"Msxml2.XMLHTTP.6.0",
+	"6.0"
+    },
     {   &CLSID_XMLSchemaCache60,
     "XML Schema Cache 6.0",
     NULL,
@@ -390,6 +398,11 @@ static struct progid const progid_list[] = {
 	&CLSID_DOMDocument60,
 	NULL
     },
+    {   "Msxml2.XMLHTTP.6.0",
+	"XML XMLHTTP 6.0",
+	&CLSID_XMLHTTP60,
+	NULL
+    },
     {   "Msxml2.XMLSchemaCache.6.0",
     "XML Schema Cache 6.0",
     &CLSID_XMLSchemaCache60,