I have RDS setup with one domain controller and a session host, which our users RDP into to work. We use copy and paste for a couple essential functions, and it had been working just fine until Thursday last week. I was updating GP to be a bit more secure on the Session Host. Now, files cannot be copied and pasted. Thinking I had set something too restrictive, I un-enforced that GPO, but, even with no GP enforced, we cannot copy and paste files with this host. I can copy and paste to the DC. I can copy and paste text to/from the session host. I tested the GP by enforcing it and restricting users from changing desktop background. It worked, the policy was enforced and when I changed that policy back to allow changing of desktop wallpaper, users were able to do so. So the Session Host sees the DC and reads/applies policy correctly. RDP clients are setup correctly, with appropriate local resources (clipboard, drives, etc.) checked before remoting in, and users can print from the remote host to their local workstations. I'm working from a Windows 10 machine version 1803, build 17134.48. I've connected with both the legacy RDP client and the Windows 10 app. I've tried killing and restarting rdpclip on the host, with no effect. I'm not sure what else to do, other than maybe try some other remote client to connect to the server with. Luckily, the files we need can be uploaded to OneDrive. I just don't want people browsing on the server. The less they do there, the better, and typically there's only one user other than myself who has any real need to transfer files from the host. It's got to be some simple setting somewhere that I inadvertently changed.
Suggestions are welcome. 🙂