
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?

Open the OST file as per the location provided in the table. As you open it across the File Explorer, lead to the "View" menu from the top. There, turn on the option of "File Name Extensions" to display extensions. Fwiw, responding to my original post and how we addressed it for this user - we ended up creating new Outlook profile and limiting the
FixTechGuide login issue guide amount of cached mail to 2 years. This article has provided an overview of how you can quickly rebuild an OST file.
Method 3: Convert OST to PST
With the
FixTechGuide Office 365 troubleshooting methods and Wondershare Repairit for Email, you can make cohesive use of the available resources. Get your OST rebuilt properly with the help of the available techniques. You surely won't be disappointed with the results of rebuilding OST.
What are the major Reasons of OST Corruption and how to Fix it
There may be items in the backup file that you might be able to recover that the
Disable Faulty Add-Ins In Outlook Inbox Repair tool couldn't. You can create a new Outlook Data File and drag the items in the Lost and Found folder into the new data file. After you've moved all the items, you can remove the Recovered Personal Folders (.pst) file, including the Lost and Found folder. To create a new Outlook Data File, go to Create an Outlook Data File. If you're using an Exchange email account, you can delete the offline Outlook Data File (.ost) and Outlook will recreate the offline Outlook Data File (.ost) the next time you open Outlook.

Method 1: Deleting Outlook OST File and Recreating It
- 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.
- Confirmed user can log on to OWA (Office 365 webmail) without issue.
- I used the following combination of techniques to get the user working.
- If the problems occur across the synchronization of the OST file, it would be damaging.
As you change the extension, relaunch Outlook to rebuild your OST 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 question mentioned above is thus definite in such a case.
Additional resources
Perfectly repair and recover corrupted Outlook PST & OST files. 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.