Some users have reported that when they open MS Outlook, they receive an error message that Outlook is using an old copy of your Outlook data file (.ost). For some ...
When Outlook has problems opening or items are missing from your inbox, you can use these steps to troubleshoot and fix issues with the data files. When you purchase through links on our site, we may ...
Offline Storage Table (OST) file is the local cache that Outlook creates when you add or sign in using an IMAP, Microsoft 365, Exchange, or Outlook.com email account. It is a database format used by ...