Next, click on the Mail (Microsoft Outlook) option and press the Email Accounts button in the dialog that appears.. After that, navigate to the Data Files tab, select your account, and click on ...

1] Repair Outlook Data Files. The Outlook Data File (.ost and .pst) contains your Outlook messages, emails, and other items. If your Outlook Data File becomes corrupted, it may lead to various issues.

Your Outlook Data File might be corrupted because of incompatible add-ons running in Outlook. We advise you to check by using the Safe Mode option. Press the Windows key + R .

It houses messages, folders and other information stored in the account, and Outlook as a program essentially connects the data in that file to its many functions so that the user can process ...

Microsoft has fixed a known issue affecting Outlook for Microsoft 365 users since June and causing slow starts and freezes as if Offline Outlook Data Files (OST) were syncing right after launch.