Windows Vista’s new TCP/IP stack offers plenty of improvements, but unfortunately doesn’t always play well with older hardware that isn’t aware of the newer features it uses.

This can be a problem when trying to use wireless networking with a router that doesn’t understand the updated “Windows Tuning” feature. The fix is to disable autotuning.

1. Click on Start.
2. Type cmd in Start Search box.
3. Right click on cmd.exe and select on Run as Administrator.
4. Type netsh int tcp set global autotuninglevel=disable and press Enter.
5. Type exit and press Enter.
6. Restart system.

If the steps above did not improve your wireless connectivity, you can always revert it back. To revert, follow the following steps below.

1. Click on Start.
2. Type cmd in Start Search box.
3. Right click on cmd.exe and select on Run as Administrator.
4. Type netsh int tcp set global autotuninglevel=normal and press Enter.
5. Type exit and press Enter.
6. Restart system.