Microsoft Outlook application creates two types of storage files; OST and PST. OST file store the Exchange profile mailbox whereas PST file stores the emails belonging to the email account you have configured Outlook with. Exchange mailbox can be accessed using the OST file and it can be defined as a local replica of the mailbox which is saved on the disk. Users can easily open .OST in Outlook but under some conditions this easy way of opening OST file in cannot be executed. Some of these conditions are corruption and unavailability of Exchange account. The section below will discuss about similar issues which affects the OST file integrity making it inaccessible.
Exchange OST file corruption can give rise to various types of error messages:
- Error code 0x8004103b
- OST Internal error (error code=00000003)
- Service-specific error 0 (0x0)