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 .

1. Run Outlook in Safe Mode . Third-party add-ins can sometimes interfere with the Outlook app and prevent it from opening on your PC. To check for this possibility, you can open Outlook in Safe Mode.

If you cannot locate the file through a specific path in File Explorer, ... Go to File > Account Settings > Data Files > Add, then choose “Outlook Data File (.pst)” and save the new file.

Your Outlook Data File is composed of a file header, ... I Cannot Send Email in Office Outlook. ... Certain add-ins can prevent Outlook from closing out the data file.