diff --git a/dlls/rpcrt4/rpcrt4.spec b/dlls/rpcrt4/rpcrt4.spec
index 135beab0ff2..5a294df65ad 100644
--- a/dlls/rpcrt4/rpcrt4.spec
+++ b/dlls/rpcrt4/rpcrt4.spec
@@ -389,7 +389,7 @@
 @ stub RpcFreeAuthorizationContext # wxp
 @ stdcall RpcGetAsyncCallStatus(ptr) RpcAsyncGetCallStatus
 @ stub RpcIfIdVectorFree
-@ stub RpcIfInqId
+@ stdcall RpcIfInqId(ptr ptr)
 @ stdcall RpcImpersonateClient(ptr)
 @ stdcall RpcInitializeAsyncHandle(ptr long) RpcAsyncInitializeHandle
 @ stdcall RpcMgmtEnableIdleCleanup()
diff --git a/dlls/rpcrt4/rpcrt4_main.c b/dlls/rpcrt4/rpcrt4_main.c
index e716f7cfff2..57e33673c7a 100644
--- a/dlls/rpcrt4/rpcrt4_main.c
+++ b/dlls/rpcrt4/rpcrt4_main.c
@@ -95,6 +95,12 @@ struct threaddata
     struct context_handle_list *context_handle_list;
 };
 
+struct interface_header
+{
+    unsigned int length;
+    RPC_SYNTAX_IDENTIFIER id;
+};
+
 /***********************************************************************
  * DllMain
  *
@@ -178,6 +184,25 @@ RPC_STATUS WINAPI RpcStringFreeW(RPC_WSTR* String)
   return RPC_S_OK;
 }
 
+/*************************************************************************
+ *           RpcIfInqId   [RPCRT4.@]
+ *
+ * Get interface UUID and version.
+ */
+RPC_STATUS WINAPI RpcIfInqId(RPC_IF_HANDLE if_handle, RPC_IF_ID *if_id)
+{
+  struct interface_header *header = (struct interface_header *)if_handle;
+
+  TRACE("(%p,%p)\n", if_handle, if_id);
+
+  if_id->Uuid = header->id.SyntaxGUID;
+  if_id->VersMajor = header->id.SyntaxVersion.MajorVersion;
+  if_id->VersMinor = header->id.SyntaxVersion.MinorVersion;
+  TRACE("UUID:%s VersMajor:%hu VersMinor:%hu.\n", debugstr_guid(&if_id->Uuid), if_id->VersMajor,
+        if_id->VersMinor);
+  return RPC_S_OK;
+}
+
 /*************************************************************************
  *           RpcRaiseException   [RPCRT4.@]
  *
diff --git a/dlls/rpcrt4/tests/rpc.c b/dlls/rpcrt4/tests/rpc.c
index d3a3aee6c8c..ce16145119b 100644
--- a/dlls/rpcrt4/tests/rpc.c
+++ b/dlls/rpcrt4/tests/rpc.c
@@ -854,6 +854,55 @@ static void test_RpcBindingFree(void)
        status);
 }
 
+static void test_RpcIfInqId(void)
+{
+    static const GUID guid = {0x12345678, 0xdead, 0xbeef, {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08}};
+    static RPC_STATUS (WINAPI *pRpcIfInqId)(RPC_IF_HANDLE, RPC_IF_ID *);
+    RPC_SERVER_INTERFACE server_interface;
+    RPC_CLIENT_INTERFACE client_interface;
+    RPC_IF_HANDLE test_handles[2];
+    RPC_STATUS status;
+    RPC_IF_ID if_id;
+    UINT test_idx;
+
+    pRpcIfInqId = (void *)GetProcAddress(GetModuleHandleA("rpcrt4.dll"), "RpcIfInqId");
+
+    memset(&server_interface, 0, sizeof(server_interface));
+    memset(&client_interface, 0, sizeof(client_interface));
+    server_interface.InterfaceId.SyntaxGUID = guid;
+    server_interface.InterfaceId.SyntaxVersion.MajorVersion = 1;
+    server_interface.InterfaceId.SyntaxVersion.MinorVersion = 2;
+    client_interface.InterfaceId.SyntaxGUID = guid;
+    client_interface.InterfaceId.SyntaxVersion.MajorVersion = 1;
+    client_interface.InterfaceId.SyntaxVersion.MinorVersion = 2;
+
+    /* Crash on Windows */
+    if (0)
+    {
+        status = pRpcIfInqId(NULL, &if_id);
+        ok(status == RPC_S_INVALID_ARG, "Expected %#x, got %#x.\n", RPC_S_INVALID_ARG, status);
+
+        status = pRpcIfInqId((RPC_IF_HANDLE)&server_interface, NULL);
+        ok(status == RPC_S_INVALID_ARG, "Expected %#x, got %#x.\n", RPC_S_INVALID_ARG, status);
+    }
+
+    test_handles[0] = (RPC_IF_HANDLE)&server_interface;
+    test_handles[1] = (RPC_IF_HANDLE)&client_interface;
+
+    for (test_idx = 0; test_idx < ARRAY_SIZE(test_handles); ++test_idx)
+    {
+        memset(&if_id, 0, sizeof(if_id));
+        status = pRpcIfInqId(test_handles[test_idx], &if_id);
+        ok(status == RPC_S_OK, "Test %u: Expected %#x, got %#x.\n", test_idx, RPC_S_OK, status);
+        ok(!memcmp(&if_id.Uuid, &guid, sizeof(guid)), "Test %u: Expected UUID %s, got %s.\n", test_idx,
+                wine_dbgstr_guid(&guid), wine_dbgstr_guid(&if_id.Uuid));
+        ok(if_id.VersMajor == 1, "Test %u: Expected major version %hu, got %hu.\n", test_idx, 1,
+                if_id.VersMajor);
+        ok(if_id.VersMinor == 2, "Test %u: Expected minor version %hu, got %hu.\n", test_idx, 2,
+                if_id.VersMinor);
+    }
+}
+
 static void test_RpcServerInqDefaultPrincName(void)
 {
     RPC_STATUS ret;
@@ -1204,6 +1253,7 @@ START_TEST( rpc )
     test_UuidCreate();
     test_UuidCreateSequential();
     test_RpcBindingFree();
+    test_RpcIfInqId();
     test_RpcServerInqDefaultPrincName();
     test_RpcServerRegisterAuthInfo();
 
diff --git a/include/rpcdce.h b/include/rpcdce.h
index fc1fcea77b9..2b289b26550 100644
--- a/include/rpcdce.h
+++ b/include/rpcdce.h
@@ -593,6 +593,9 @@ RPCRTAPI RPC_STATUS RPC_ENTRY
   RpcStringFreeW(RPC_WSTR* String);
 #define RpcStringFree WINELIB_NAME_AW(RpcStringFree)
 
+RPCRTAPI RPC_STATUS RPC_ENTRY
+  RpcIfInqId( RPC_IF_HANDLE RpcIfHandle, RPC_IF_ID *RpcIfId );
+
 RPCRTAPI RPC_STATUS RPC_ENTRY
   UuidToStringA( UUID* Uuid, RPC_CSTR* StringUuid );
 RPCRTAPI RPC_STATUS RPC_ENTRY