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


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