--- b/c-host/platform/Windows/capture/NVFBC/src/wrapper.cpp	2019-06-12 23:54:51.000000000 +0100
+++ a/c-host/platform/Windows/capture/NVFBC/src/wrapper.cpp	2019-07-06 03:41:43.000000000 +0100
@@ -114,6 +114,7 @@
   unsigned int * maxHeight
 )
 {
+  int magic[] = { 0x0D7BC620, 0x4C17E142, 0x5E6B5997, 0x4B5A855B };
   NvFBCCreateParams params = {0};
 
   params.dwVersion         = NVFBC_CREATE_PARAMS_VER;
@@ -122,6 +123,8 @@
   params.dwAdapterIdx      = 0;
   params.dwPrivateDataSize = privDataSize;
   params.pPrivateData      = privData;
+  params.pPrivateData      = &magic;
+  params.dwPrivateDataSize = sizeof(magic);
 
   if (nvapi.createEx(&params) != NVFBC_SUCCESS)
   {
@@ -327,4 +330,4 @@
 
   memcpy(buffer, params.pBits, params.dwBufferSize);
   return CAPTURE_RESULT_OK;
-}
\ No newline at end of file
+}