diff --git a/include/mfidl.idl b/include/mfidl.idl
index 4df1d0c85ba..7034378f585 100644
--- a/include/mfidl.idl
+++ b/include/mfidl.idl
@@ -1634,3 +1634,7 @@ cpp_quote("EXTERN_GUID(CLSID_VideoProcessorMFT, 0x88753b26, 0x5b24, 0x49bd, 0xb2
 cpp_quote("EXTERN_GUID(CLSID_WMVDecoderMFT, 0x82d353df, 0x90bd, 0x4382, 0x8b, 0xc2, 0x3f, 0x61, 0x92, 0xb7, 0x6e, 0x34);")
 
 cpp_quote("EXTERN_GUID(CLSID_WMADecMediaObject, 0x2eeb4adf, 0x4578, 0x4d10, 0xbc, 0xa7, 0xbb, 0x95, 0x5f, 0x56, 0x32, 0x0a);")
+
+cpp_quote("EXTERN_GUID(CLSID_HttpSchemePlugin, 0x44cb442b, 0x9da9, 0x49df, 0xb3, 0xfd, 0x02, 0x37, 0x77, 0xb1, 0x6e, 0x50);")
+cpp_quote("EXTERN_GUID(CLSID_NetSchemePlugin, 0xe9f4ebab, 0xd97b, 0x463e, 0xa2, 0xb1, 0xc5, 0x4e, 0xe3, 0xf9, 0x41, 0x4d);")
+cpp_quote("EXTERN_GUID(CLSID_UrlmonSchemePlugin, 0x9ec4b4f9, 0x3029, 0x45ad, 0x94, 0x7b, 0x34, 0x4d, 0xe2, 0xa2, 0x49, 0xe2);")
diff --git a/libs/mfuuid/mfuuid.c b/libs/mfuuid/mfuuid.c
index 537eaef6427..ce50eedb0a0 100644
--- a/libs/mfuuid/mfuuid.c
+++ b/libs/mfuuid/mfuuid.c
@@ -35,3 +35,4 @@
 
 DEFINE_GUID(MF_SCRUBBING_SERVICE, 0xdd0ac3d8,0x40e3,0x4128,0xac,0x48,0xc0,0xad,0xd0,0x67,0xb7,0x14);
 DEFINE_GUID(CLSID_FileSchemePlugin, 0x477ec299,0x1421,0x4bdd,0x97,0x1f,0x7c,0xcb,0x93,0x3f,0x21,0xad);
+DEFINE_GUID(CLSID_SecureHttpSchemePlugin, 0x37a61c8b,0x7f8e,0x4d08,0xb1,0x2b,0x24,0x8d,0x73,0xe9,0xab,0x4f);