Sometimes it will be VERY helpful to disable Windows 7’s TCP/IP autotuning.
This workaround help some client to solve a lot of problems like the following:
– Email timeouts on receiving messages
– Very slow or no network file server access, especially to SBS2003 servers
– random network timeouts or connectivity problems, freezing or slow web browsing or VPN connections.
To disable TCP/IP autotunning, run a command prompt with “Elevated privilege” and execute the following:
netsh interface tcp set global autotuning=disabled
To verify that it is dsabled:
netsh interface tcp show global
To set back to the default Windows 7 configuration:
netsh interface tcp set global autotuningl=normal
Windows has the ability to automatically overwrite the above user settings, so you may also want to enforce them with the following:
netsh int tcp set heuristics disabled
Shutdown and restart you Windows 7 client to check if this solutions work.
Hope this help