The Messenger Support Blog has today been updated adding further error code troubleshooting articles as many people have been getting hit with the 8xxxxxxx error codes when logging in with the newer versions since Windows Live Messenger 8.0.
Heres some links to step by step instructions which help fix errors you maybe recieving;
- Error 80004005
- Error 80040111 or 80040154
- Error 80048820, 8004840a or 80072ee7
- Error 80048821
- Error 80048823
- Error 80072745
- Error 8100030d
- Error 81000306
Hopefully these will solve your problems you may be experiencing with Messenger. Remember to check out the other articles at Messenger Support Blog relating to other error codes and problems relating to Messenger.