How to Recreate OST File in Outlook| An Ultimate Guide

You want to rebuild your OST file to solve the issues caused by corrupt files, but you don’t know how to do it? If so, this article will help you. Here, we will explain the reasons behind your corrupt file and various methods to recreate OST file in Outlook.

Outlook stores an offline copy of your mailbox in OST file format, When your internet connection is lost. It creates an offline OST file for making any changes in the file, by connecting with an IMAP or Exchange account Once your connection is back, then the changes will sync to the exchange server and upgrade your mailbox. By default, it stores the file locally as a result, the OST file can easily become Corrupted.


Reasons Behind the Corruption of OST Files

OST files can be easily damaged or corrupted and the reasons behind this are many.

  • Sudden power failure, when you are working with an OST file.
  • Your file is attacked by any Malware or Virus.
  • Not fully shut down the Outlook program while you work with the OST file.
  • Problems with your storage area.
  • Your file can be easily corrupted if your system crashes.

Due to these reasons, your OST file can be damaged and as a result, it stops your synchronization and causes many issues. Therefore, there is one way to solve this problem and that is to rebuild damaged OST files. By recreate OST file in Outlook we can easily resolve the issues and there will be no error occurring while we work with the file.


Methods to Recreate OST File in Outlook

By rebuilding your inaccessible OST file, you can solve almost all the issues related to the file. For that reason, there are two methods available that can easily reset the names. The first method is the manual method. In this, we have to first delete the current OST file extension and then recreate OST file in Outlook. The other method is the professional method. In this, we use a specialized tool to rest the files. So, the two methods are.

  • Manual method to rebuild damaged OST file:- first we delete the file and then rebuild it.
  • Professional method to recreate OST file:- we use a specialized tool to rebuild the damaged file.


Manual Method to Rebuild Damaged OST File

In this, we divided the method into two parts to recreate OST file in Outlook. The first part is to delete the current OST file extension. In this, we manually delete the current file, but before deleting any files, you should first back up your data. The second part is to reset your files. In this, you also need to make sure that your Outlook and Exchange servers are synced perfectly to each other. Follow these two parts step-by-step to recreate OST file in Outlook.


Deleting the Current OST File Extension

  1. If your outlook program is open. So, first, close the program.
  2. Open your Run window and search “%LocalAppData%MicrosoftOutlook”.
  3. This command will automatically find the location of files from Outlook.
  4. Now, select the Files and press the Delete key to delete your files.


Recreate OST File in Outlook Manually

  1. If you are using Outlook 2010, click on the Tools menu. But if you are using Outlook 2013, 2016, and 2019 then, click on the File option and then Info.
  2. Click on Account settings and double-click on Microsoft Exchange.
  3. Go to Settings, click on More settings, and then click on the Advanced tab.
  4. Select the Offline Folder File setting. For Outlook 2013, click on Offline Data File setting.
  5. Browse your location to save your Outlook. ost file. Click on OK.
  6. A message “.ost could not be found. Would you like to create it? Click on the OK button.
  7. After the end of the process. Press OK and then Finish button.


Limitations of Manual Method

This method is free to use, but it is not a reliable or best option for rebuild the damaged OST file because it has many drawbacks rather than benefits.

  • This is only applicable if your outlook and Microsoft Exchange servers are perfectly synced to it.
  • If there is network loss during the process, you may lose data permanently.
  • This method will not work if your OST file has underlying issues.
  • If your Outlook mailbox profile is deleted from the server, this method fails to rebuild the files.

With these, a manual method is not the best way to rename the files. Therefore, there is another method that can help to rebuild damaged OST file without any difficulties.


Professional Method to Recreate OST File

In this method, we use SysTools OST to PST converter software to rebuild our damaged OST file into OST format. As we know, PST files store their data in Outlook. Similarly, if we convert our corrupt OST file into PST format. Your file can easily be reset and there can be no issues when we work. It not only converts the files in just a few seconds, but it also offers various features to help the users. Some of them are.


Features of Software

  • It can easily convert inaccessible, orphaned, and large-size OST files.
  • It offers two scan options to scan your files- Quick scan and Advanced scan.
  • You can search your files from the list of files with the help of advanced search filters.
  • It can easily convert the ost file without an exchange profile and server connectivity.
  • Easily converts IMAP, and Exchange account easily.


Instructions to Convert OST File into PST Format

  1. Download and launch the software. After that, at the top of the screen click on the Add file
  2. Browse your OST files.
  3. Now, choose one option from Quick scans or Advanced scans to scan your files.
  4. Preview your files.
  5. Select the PST option for the export option.
  6. Choose a location and click on the Export option.

Follow these instructions to recreate OST file in Outlook successfully. This method is very useful, as it can recover files for all situations. And also compatible with all versions of Outlook.



In this article, we discuss how an OST file can be damaged and we can easily solve this issue by recreate OST file in Outlook. For that, there are two methods to reset the files. The first method is the manual method. This method is not suitable for every problem. That’s why we use the professional method. In this, we use a specialized tool that is recommended by experts to rebuild damaged OST file.

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