Use the Inbox Repair tool or disable add-ons to recover your .PST and .OST files in Microsoft Outlook Classic and New ...

If such files get corrupted, Microsoft Office 365 Outlook Repair Tool can help you recover messages, contacts, attachments, and other data from corrupted PST or OST files.

We can teach you how to repair a corrupted file, but to prevent it from happening to other files, we recommend investigating the root cause of the corruption.