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How to Delete or Recover OST Files

Last updated on March 12, 2019 by JoKelly

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How to Delete or Recover OST Files

If you’ve been using Microsoft Outlook for a while, then you probably know a thing or two about the OST files. Also known as Offline Storage Table, this Outlook feature stores all your offline work and updates your system whenever you go online. But there are times when your OST files accumulate and take a toll on the efficiency of Outlook by making it less efficient and slow, which is why it’s essential to learn how to delete OST file to free up some space in your system for newer files. Some OST files may also be corrupted or damaged that deleting them is the best option you have because you won’t be able to use them anyway. In this article, we will show you the detailed steps to delete Outlook OST file

How to Delete Outlook OST Files

If you’re ready to give your Outlook some breathing room, here are some steps to help you delete OST files without losing your email messages.

Step1 Back up your OST into PST format

First order of business: back up your OST files into PST format. Click, “File” > “Open & Export” > “Import/Export”. Another window will appear and select “Export to a file”, and click “Next”. Again, a window will pop up and create a file of type, select “Outlook Data File (.pst)”, then click “Next”. Although you think that you don’t need these files anymore, it’s still smart to back them up before deleting just in case something gets accidentally removed.

back up your OST file into PST format

Step2 Run the Microsoft Outlook app

Close your MS Outlook app and type “Run” on the search bar of your Start menu. Search for the OST file that you want to delete from the run command by typing C:Users\UserName\AppData\Local\MicrosoftOutlook. Then, hit “OK”.

search OST file then type run

Step3 Delete Outlook OST file

Select the right OST file and click “Delete.” You will get a confirmation message, which you can click on “Yes” to delete Outlook OST file. Once the OST file is deleted, make sure to create a new OST file to allow your MS Outlook to work efficiently still.

delete outlook file

How to Recover OST Files With AceThinker Disk Recovery

So, you’re done deleting OST files but then, you realize that you need some of those files back. Don’t worry because you can easily recover OST file with the help of AceThinker Disk Recovery. This all-in-one tool is designed specifically to help recover different types of formats — from images to documents — without the hassles of having to do everything manually. Here’s how to recover OST files using the AceThinker Disk Recovery tool:

Step1 Launch the app

After downloading AceThinker Disk Recovery on your computer, launch it and select the OST files that you want to recover.

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Step2 Scan and search for the file you want to recover

You can either choose a specific file type or pick out categories that you want to recover. Click “Next” and choose a location where you want the AceThinker Disk Recovery to scan and search for the OST files that you accidentally deleted. The software will instantly scan your chosen location and give you a list of files to preview before fully restoring them.

search to scan your file

Step3 Retrieve your deleted OST file

After verifying that the OST files that you need are on the list, you can easily click “Recover” and then browse to determine the location on where to save your lost data. Then, click “OK” and the software will start retrieving the OST files that you accidentally deleted. Once the process is done, you can just check the restored files on the folder where you chose to save them.

recover the deleted OST file


Now you’ve got the way to delete damaged, corrupted or useless OST files in Outlook. If you delete some OST files by accident, you still don’t need to panic. Thanks to technology and innovative software programs, it is now possible to not only retrieve OST files but also different file types like images, documents, archives, emails, and videos. So, whenever you lose data due to accidental deletion, OS crashes, reformatting or hardware damage, you don’t have to worry too much because you can always use tools to get back the files that you need.

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March 7, 2019

Post By JoKelly to disk-recovery

Last updated on March 12, 2019

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