If you open MS Outlook and see an error message, Outlook is using an old copy of your Outlook data file (.ost), then use these fixes.

This post features solutions to fix this data file is associated with a mail account OST file error on Outlook. This error can occur when a user fails to delete an ...

Outlook OST file can be corrupt or bent due to several justification Synchronizing evil, file size mistake, Virus attacks and Trojan errors, Software and hardware defective, File situation fault and ...

However, at other sites, I'm sure I have users who have greatly exceeded 2GB on their OST files. Checking via RDP into those Exchange 2003 servers, I see users with 3.x GB mailboxes. Is this an issue ...