diff --git a/include/Makefile.in b/include/Makefile.in
index 4a8c261bb8f..e6477d13cef 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -581,6 +581,7 @@ SOURCES = \
 	powrprof.h \
 	prntvpt.h \
 	profinfo.h \
+	proofofpossessioncookieinfo.idl \
 	propidl.idl \
 	propkey.h \
 	propkeydef.h \
diff --git a/include/proofofpossessioncookieinfo.idl b/include/proofofpossessioncookieinfo.idl
new file mode 100644
index 00000000000..3d639523e8a
--- /dev/null
+++ b/include/proofofpossessioncookieinfo.idl
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2021 Jacek Caban for CodeWeavers
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+import "oaidl.idl";
+import "ocidl.idl";
+
+typedef struct ProofOfPossessionCookieInfo
+{
+    LPWSTR  name;
+    LPWSTR  data;
+    DWORD   flags;
+    LPWSTR  p3pHeader;
+} ProofOfPossessionCookieInfo;
+
+
+cpp_quote("static inline void FreeProofOfPossessionCookieInfoArray(ProofOfPossessionCookieInfo *cookie_info, DWORD count)")
+cpp_quote("{")
+cpp_quote("    unsigned int i;")
+cpp_quote("    for (i = 0; i < count; i++)")
+cpp_quote("    {")
+cpp_quote("        CoTaskMemFree(cookie_info[i].name);")
+cpp_quote("        CoTaskMemFree(cookie_info[i].data);")
+cpp_quote("        CoTaskMemFree(cookie_info[i].p3pHeader);")
+cpp_quote("    }")
+cpp_quote("    CoTaskMemFree(cookie_info);")
+cpp_quote("}")
+
+
+[
+    object,
+    uuid(cdaece56-4edf-43df-b113-88e4556fa1bb),
+    pointer_default(unique)
+]
+interface IProofOfPossessionCookieInfoManager : IUnknown
+{
+    HRESULT GetCookieInfoForUri([in] LPCWSTR uri,
+                                [out] DWORD *cookieInfoCount,
+                                [out, size_is(,*cookieInfoCount)] ProofOfPossessionCookieInfo **cookieInfo);
+}
+
+
+[
+    uuid(7681a019-8f51-4594-9507-f27040f71f01),
+    version(1.0)
+]
+library ProofOfPossessionCookieInfoManagerLib
+{
+    [
+        uuid(a9927f85-a304-4390-8b23-a75f1c668600)
+    ]
+    coclass ProofOfPossessionCookieInfoManager
+    {
+        [default] interface IProofOfPossessionCookieInfoManager;
+    }
+}