Launch CMD and navigate to %appdata%\microsoft. CD %appdata%\microsoft
Dir /s ListCache.dat
Decide if you want to delete the cache. Del /s ListCache.dat
Restart your MSN Messenger.
3) Register softpub.dll.
Click Start (Button), and then click Run, type regsvr32 softpub.dll. Restart MSN Messenger.
It would do no harm to also use regsvr32 to re-register: wintrust.dll, initpki.dll, Rsaenh.dll Mssip32.dll and Cryptdlg.dll. Here is the command string to register these dlls. Launch the 'Run' command and paste:
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