This is a guest post by Ashish Srivastava from EasyTechTools.

If users with Microsoft Outlook are unable to keep their present OST files, they will need to restart or recreate their OST files if they are unable to restore the original database.

By downloading a copy of Exchange mailbox products, you can recreate OST files again. .

Also known as the Offline Storage Table file, Outlook creates the OST file to store Exchange server copies of emails.

In this manner, if for some reason customers are unable to link to the Internet, they can continue to work in cache mode on their mailboxes.

When the Internet connection resumes, the mail server synchronizes the OST file and uploads the modifications.

How OST Works?

A prevalent scenario occurs when some information files are accidentally deleted by a user. Outlook saves all contacts, emails, in a server-based mailbox. But an Offline Data File (OST) that stores a copy of the mailbox account is a file that is saved on the hard disk. Therefore, in the offline setting, it enables users to access information rapidly.

If the user accidentally deletes some data files from Outlook OST File that can easily be stored in the folder of deleted items. But what occurs if these are continuously deleted and are not accessible in that folder of deleted products, or there may be a scenario where the user mistakenly clears the file.

First of all, we need to know the OST Files ' significance.

Having the OST file is very important. With an extendable capacity of up to 50 GB, users can save as much data as they want to access while offline. It also allows lost mailboxes to be restored if it damages the Exchange server.

Depending on the version of the Windows operating system, the OST file is stored in different places. Despite the OST file’s important benefits, there are a few disadvantages as well. If your account profile is harmed, for instance, the OST file is ineffective and recovering it would be pointless.

And if the OST file gets damaged itself, recovering can take a lot of moments.

Reasons For OST File Damage

There are many reasons why an OST file should be corrupted. And once this happens, they become completely unreadable. The following are some of the hardware and software variables that could harm an OST file:

  • A power outage occurs during file synchronization.
  • There is an unclean end of a Microsoft Outlook session.
  • Capacity is full of files for storage.
  • There may be a virus in the system.
  • There may be network problems during file synchronization.
  • Microsoft Outlook application presence of problems and bugs.
  • Presence of storage device problems and bugs.

Restore OST File In Outlook

Read the following steps manually to repair this OST file carefully:

  1. Click File–>Info –>Account Settings to start Outlook.
  2. In the Account Settings window, select the e-mail tab and select Microsoft Exchange. The system will then display the Change Email Account.
  3. Click More Settings.
  4. In the Microsoft Exchange window, select ' Advanced' .
  5. Click the Offline Folder File Settings button.
  6. Enter the OST file path in the File field.
  7. Click the OK button.
  8. Then the OST file is called by the system as Outlook.ost.
  9. If the system already contains a file with the same name, you will be told for a new file name.
  10. Click OK, then click Complete.

Manual techniques can often be risk-filled and time-consuming. If anyone has so much time to fix the problem then it is not possible to operate the manual technique correctly. Hence, the OST File Recovery Tool is another better option for recovering information from OST File.

You can readily restore your deleted information in Outlook with the assistance of this instrument and this tool can also transform the file to various formats such as MBOX, EML, PST.


Loss of information from any application or folder, if accidentally deleted, can lead to a serious issue for the user. This situation can occur inadvertently with anyone else at any moment. Therefore, we gave you both the techniques in this article to fix the problem and get back your retrieved information.

It is suggested that you can discover the permanently deleted file rapidly compared to a manual approach by using the OST File Recovery Tool.