While converting it was easy, repairing it was also quite basic to process. To execute this, you need to have a good tool with yourselves. Wondershare Repairit for Email fixes all OST file issues with ease. While it is your go-to solution, it provides exceptional repair services.

I can't repair corrupted Outlook .ost file

It is surely possible to rebuild the OST files at any instant. Although the procedure may differ to some extent, it can be executed. This article will mention the process to rebuild the OST file in detail.

Part 1: Can OST Files Be Rebuild?

I have 2 computers and both have been facing the same issue. You can check the location of your Outlook Data Files in Outlook Stuck on Synchronizing Folders Outlook.

Method 3: Convert OST to PST

You might be working on something FixTechGuide support for Office 365 important across it when it happens. As you said Outlook E3 licenses should support at least 100GB of data & there’s no excuse why it can’t support OSTs above 50GB when they offer twice that space. Refer to this blog Solutions To Fix Error – "Errors Have Been Detected In The File Xxx.Ost" Solutions To Fix Error – "Errors Have Been Detected In The File Xxx.Ost" for the solution to this OST error. This article offers to rebuild the OST file without putting you in any difficulty.

What are the major Reasons of OST Corruption and how to Fix it

Confirmed user Repair Outlook Profile Online can log on to OWA (Office 365 webmail) without issue. Upon starting Outlook, error message displayed is "Errors have been detected in the file ," then prompt appears to locate (not fix) the OST file. Outlook 2016 connecting to Office 365 E3, mailbox size ~55GB and Outlook reghack effected to allow for ~80GB OST. If your computer faces unnecessary power outages during a process, it can be damaging. When Outlook is running and is halted in such a way, it can damage the OST file.

• We are aware that OST files are directly connected to the Outlook email.
• Virus attacks can directly attack the OST file, which would disrupt its data.
• Wondershare Repairit for Email fixes all OST file issues with ease.
• The Inbox Repair tool checks the Outlook data files on your computer to see if they're in good shape.
• Confirmed user can log on to OWA (Office 365 webmail) without issue.
• While this is an effective model, the discussion would revolve around all possibilities.
• I used the following combination of techniques to get the user working.

The Inbox Repair tool checks the Outlook data files on your computer to see if they're in good shape. I don’t have an answer to this other than to voice my suspicion that it is likely due to new Microsoft updates (windows and office). Find the .ost file that the error message reported to have errors, and then delete it and open outlook, it will recreate a new .ost file. With an OST file in your hand, you can even retrieve it if it gets corrupted.

Additional resources

The file would get inaccessible and won't update in any case. To the ones that said 50Gb are more than enough for most people,… well we are in 2020 & I can assure you that more than half of the accounts we manage are way above 50Gb, close to 100Gb actually. Only way to restore Outlook 2016 (Windows) functionality was to create a new profile; this worked, and a new OST file was created. On the next screen, access the "Find File" option if you are unaware of the location. If you know the location, click on the "Add File" tab and browse it.