Once you re-open Outlook, your OST file is automatically recreated or rebuilt. If your hard drive goes through any physical damage, it will damage the data across it too. A bad sector or corrupted hard drive can cause OST inaccessibility.

Outlook - Corrupt OST

An Outlook data files are designed to safely handle max space 50GB in Outlook 2010 to 2019 and Office 365 by default. You can try syncing outlook file 6 to 12 months or through archiving email using retention policy, could be a better way to protect the .ost size from corrupt. As it is converted, you can easily view the contents of the data file. This will protect your online Outlook email repair utility email data and can be exported anytime.

How to recover OST files

You can check the location of your Outlook Data Files in Outlook.

• Although there are many methods to try, a few are productive.
• While they act as the basic backup data file for the user, the OST file can be easily converted to this form.
• To create a new Outlook Data File, go to Create an Outlook Data File.
• As you close them, lead to the folder and right-click on the OST file.
• 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.
• This article has provided an overview of how you can quickly rebuild an OST file.
• You need the right tool that does not corrupt or damage the data in the process.

How to Fix Corrupted OST Files

Perfectly repair and recover corrupted Outlook PST & OST files. Fwiw, responding to my original post and how we addressed it for this user - we ended up creating new Outlook profile and limiting the amount of cached mail to 2 years. If the OST still gets corrupted when you have reduced the size there is something in the mailbox causing the problem. You must re-select "Account Settings" when it opens across a drop-down menu. There, lead into the "Data Files" tab and select your OST file. After selecting the file, click on "Open File Location" to redirect to the folder.

Part 3: How to Rebuild OST Files?

While this is an effective model, the discussion would revolve around all possibilities. We will help our readers decide the best way to rebuild OST for functioning through Outlook. For the past 2 weeks, the OST of my Desktop Outlook has been corrupting continuously. I have 2 computers and both have been facing the same issue.

Repair an Outlook data file (.pst) file

The first solid question that comes to mind is whether OST files are rebuildable. We are aware that OST files are directly connected to the Outlook email. The FixTechGuide support for Office 365 question mentioned above is thus definite in such a case.



Thus, you need to have a good anti-virus system to protect your computer. Find solutions to common problems or get help from a support agent. 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.

I can't repair corrupted Outlook .ost file

You might be working on something important across it when it FixTechGuide Outlook repair tutorial 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. In addition, you could open outlook in safe mode, maybe some add-ins affect the outlook. You could Right-click the Start button, and click Run, type Outlook.exe /safe, and click OK. This article offers to rebuild the OST file without putting you in any difficulty.

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. Malware or virus attacks can cause great havoc across the computer. Every important data and detail might be damaged due to it. Virus attacks can directly attack the OST file, which would disrupt its data.