I upgraded a TS 2008 R2 to 2012 R2 (in 2 steps). All went right, all RemoteApps still work, but the clipboard lets us only transport text to and from the RemoteApps, no longer can we transport files via clipboard (Clients are still the same, win7/8.1 with latest RDP Clients)
I see no reason and the event log is clean, the Server is patched. Policies don't interfere.
Anyone seen and solved this before?