Hi,
See
this page for help on solving your problem.
quote:
MSN Messenger 7.5
If you are using MSN Messenger 7.5, please follow the steps below:
Go to http://clientconfig.passport.net/ppcrlconfig.bin
Download that file
Rename it to ppcrlconfig.dll
Drop it in C:\Documents and Settings\[Windows USER]\Application Data\Microsoft\IdentityCRL
Attempt to sign in again.
If you can’t get to http://clientconfig.passport.net/ppcrlconfig.bin, then email txtest_johnweis@msn.com