Hey everyone,
I just finished reïnstalling my laptop and I just finished the MSN Messenger install.
This had happend to me before and I got this solution from Microsoft Support a while ago.
When you attempt to log in on MSN Messenger, it won’t log you in and it’ll give you the 81000306 error code.
What you can try is to turn Windows Auto Tuning off by entering the following command in an elevated command prompt:
netsh interface tcp set global autotuninglevel=disabled
If done properly, it should respond with “Ok.” and Windows Auto Tuning is now turned off.
Try logging in again and it should work!
If not, run the following command to turn Windows Auto Tuning back on and then I’m afraid this solution didn’t help you ;P
So far it has always worked for me!
netsh interface tcp set global autotuninglevel=normal