HKCU\Software\Microsoft\Terminal Server Client\RDGClientTransport DWORD 0x00000001
We stumbled over this "secret" registry entry that acually seemed to solve a problem for us. But where is the officiel dokumentation for this entry?
In short we use it to force the Client Transport to revert to "RPC over HTTP" instead of "modern" HTTP.
With a value of 1 we're able to connect Windows 10 machines via a 2012 R2 RDGW to our 2012 R2 RDSH..
It seems to however have introduced a minor delay when trying to reconnect (which now waits the full 180 seconds between attempts) - it does however succed after the 180 seconds timeout.
Non-statistically proven attempts shows that a value of 3 alters this - so the reconnection is back to normal..
Any comments from the product group?