I have a Windows 2008R2 Remote Desktop server with about 40 users who log on each day over a LAN & WAN. However, there is one user who intermittently can't type when logged onto Remote Desktop.
For example, if he has NotePad open (although it happens in every application I've tested), he'll be able to type a few characters before it "freezes" (although mouse still works). After say 30 seconds he'll be able to type another 10 characters. If I minimise the Remote Desktop window, I can type in NotePad on the local desktop without any issues (I've tried changing the keyboard anyway, but it didn't help).
None of the other 40 users are having the issue. None of the user people who use the same local computer (Window XP Pro) he uses have any issues when they log onto their Remote Desktops.
I thought it had to be his user profile so I:
1. Renamed Users' folder to username.bak
2. Found the user SID: wmic useraccount get name,sid
3. Removed SID from HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList
4. Logged in as the user
5. Copied his documents from .bak to new profile folders
However, he's still having the same problem... to make it even harder to diagnose, it doesn't always happen immediately when he logs on, it can be fine for 20 minutes before it displays the symptoms!