How to Fix the Windows Live Messenger Unable to Sign In Error in Vista
Vista's TCP Auto Tuning networking doesn't work well with some routers or other network devices. Thus, causing a connection error for Windows Live Messenger. This will show you how to fix the Windows Live Messenger Unable to Sign In error code 81000306
FOR THIS ERROR MESSAGE ONLY:
We were unable to sign you in to Windows Live Messenger, possibly because of a problem with the service of with your internet connections. Please make sure you are connected to the Internet. Error code 81000306.
Make sure that you have the latest released version of Windows Live Messenger
installed to help avoid having problems.
Make sure that you have your firewall program setup to allow Windows Live Messenger (msnmsgr.exe)
In and Out access to the internet. If this doesn't solve the problem, then continue. If your using Windows Firewall
, see: How to Change Windows Firewall Settings in Vista
Open a elevated command prompt
In the elevated command prompt, copy and paste the command below.
NOTE: To undo this, type: netsh int tcp set global autotuninglevel=normal instead.
netsh int tcp set global autotuninglevel=disabled4.
. (see screenshot below)
You will get a OK
message back. If not, repeat step 3.
Log off and log on, or restart your computer to apply the changes.