How to Change OST File Name in Simplest Renaming Steps

OST to PST Converter /February 19, 2025

As an Outlook user, you should change the OST file name to troubleshoot or fix a problem in the OST program. This will help you deal with some of the common issues with OST files, such as file corruption, OST not synchronizing with the local mailbox, etc.
The OST file is a local copy of the mailbox data in the Exchange Server. It allows users to work offline when a connection to the Exchange Server is not possible and synchronizes with the Exchange server when a connection is established. Here is a simple guide to changing the OST file name.

The need to rename the OST files:

Before proceeding with how to change the file name of the OST file, let us understand the need to change the OST file name. The main reason is to deal with the issues we encounter with the MS Outlook files. We can fix the issues encountered in MS Outlook by recreating and renaming the OST files. Some of the issues of MS Outlook that can be fixed by recreating the OST files are as follows.

  • When the OS Outlook gets disconnected
  • When the Outlook file freezes
  • When the email is not sent or received because of mailbox size
  • Outlook calendar is not displaying the information – such as Free or Busy.
  • Corruption in the OST files.

How to rename the OST file?

Following these steps allows you to change the name of the OST file and create a new copy at any time.

  • The first step is to exit the MS Outlook file.
  • Click on Start and then Click on the Control Panel.
  • Click on Mail and then Click on the Show Profiles link.
  • In the main window, select the profile name and then click on the properties.
  • Now, click on email accounts and choose exchange account
  • Click on change
  • Now, you must type the server IP address and the user’s profile ID.
  • The next step is to click on More Settings
  • Click on the Advance tab and then clear the Use Cached Exchange Mode.
  • Now click on the Outlook data file settings.

    • Show Profiles

  • Click on Disable Offline Use. After this step, a new dialogue box will appear. You have to click ‘Yes’ on the dialogue box. If the ‘Disable Offline Option Use’ is disabled, then it means that the Use Cached Exchange Mode Checkbox was not cleared in the previous step.
  • Click on Offline Folder File settings again.
  • Now click on OK.
  • Select the Use Cached Exchange Mode checkbox in the Cached Exchange Mode Settings.
  • Now click on OK, Click on Next, and then Click on Finish.
  • Click on Close in Account Settings and Mail Setup dialog box.

    • Disable Offline

    If the Outlook issues are not resolved after this step, you may have to try the method below to rebuild the OST file.

    Rebuilding OST file Outlook 2013 and 2010:

    In this method, it is important to first delete an OST file and then recreate and rename it in Outlook 2013 and 2010.

    Deleting an OST File:

    To delete the OST File, you have to follow the steps below.

    • The first step is to close MS Outlook.
    • Go to the default location where MS Outlook saves the OST file.
    • In MS Outlook 2013 or 2010, the default location is C:\Users\Computer Login ID\AppData\Local\Microsoft\Outlook.
    • After running this command, the list of Outlook files will appear.
    • Now, right-click on the OST file that needs to be deleted.
    • Now click on Delete.

    Recreate and rename the OST file Outlook 2013 and 2010:

    After deleting the OST files, you must recreate and rename them by following these steps. To complete this process and change the OST file name, follow the following steps.

    • Click on the Control Panel, and then Click on the Mail.
    • Click on the Show Profiles menu and then Click on the Add menu.
    • Try the new profile name and then click OK.
    • Click on the server settings ‘configure manually’ or click on the additional server types menu that pops up in a dialogue box and then click Next.
    • Select the MS Exchange or compatible service and then Click on Next.

      • Next

    • Type the IP address and user name of the Exchange Server. Make a check on the Use Cached Exchange Mode.
    • Click Finish.

    Opening the account in the MS Outlook file will now be possible. Thus, these are simple methods for changing the name of an OST file.

    If you think these step too much time cosuming the you use simple conversion method OST to PST Converter.

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