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RE: I can't seem to sign into Windows Live Messenger.
After downloading Windows Live Essentials to a new install of Windows 7 Home Premium I had the same problem and cured it by disabling the autotuning feature. My WLM is version 2009. The following routine also works with Windows VISTA.
1. Click Start, click All Programs, click Accessories.
2. Right-click Command Prompt, then click Run as Administrator.
3. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
4. At the command prompt, type the following command, and press ENTER:
netsh interface tcp set global autotuninglevel=disabled
5. This command disables the Receive Window Auto-Tuning feature.
6. Close the Command Prompt window.
7. Restart the computer.
If this does not cure your particular WLM sign-in problem, you can return autotuning to normal by typing
netsh interface tcp set global autotuninglevel=normal
at the command prompt in the way as described above.
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