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While they act as the basic backup data file for the user, the OST file can be easily converted to this form. Also, I forgot to mention that normally when the OST is corrupted you normally delete the file and recreate it. I’ve used the repair tool when this started and it did not really repair the file. I used the following combination of techniques to get the user working. In the Folder Pane, you might see a folder named Recovered Personal Folders that contains your default Outlook folders or a Lost and Found folder.
I can't repair corrupted Outlook .ost file
You need the right tool that does not corrupt or damage the data in the process. Convert your OST to PST for optimal results if rebuilding the OST file does not do the trick. Further, the saved PST file could be accessed at any time by importing it in the Outlook profile.
Part 1: Can OST Files Be Rebuild?
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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. If you can open the original Outlook Data File, you might be able to recover additional items. The Outlook profile repair and recovery steps Inbox Repair tool creates a backup file with the same name as the original, but with a .bak extension, and saves it in the same folder.
Method 3: Convert OST to PST
With the Fix Outlook Not Opening After Windows Update 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 Troubleshoot Office 365 Sync and Login Issues 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.
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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.With an OST file in your hand, you can even retrieve it if it gets corrupted.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.
Malware or virus attacks can cause great havoc across the computer. Virus attacks can directly attack the OST file, which would disrupt its data. 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.
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.
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