Symptom: When connecting to a server running Terminal Services using the Remote Desktop client in Windows 7 or Vista, the connection is slow and lags despite a fast network connection.
Problem: This is usually, but not always, caused by the way TCP “Auto-tuning” is handled in Windows 7/Vista.
Solution: As stated above there are several settings that can lead to this loss of Remote Desktop performance, but the more I run into this it seems that the following steps will fix the problem 99% of the time.
- Open an elevated command prompt. (Start -> Run. Type
cmdand press Ctrl+Shift+Enter) - Type the following command, all on one line, followed by the Enter key:
netsh int tcp set global autotuninglevel=highlyrestricted - If the program returns
Ok., then the command completed successfully. - Try connecting to the Terminal Server again, it should be much faster!
-n
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