Fix “OST file not updating” error easily

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OST File is not Updating

Are you upset over “OST file not updating” error? This issue prevents access updates Exchange mailbox data in the Outlook application. There are some available ways to resolve this error and access new Exchange data on email application.

Fix “OST file not updating” error easily

As it already known that Exchange configuration is a service offered by the Outlook email client, it is susceptible to errors and issues occurred due to incorrect settings or other reasons. One of the most common errors is: “Outlook not syncing” or “Outlook OST folder not updating”. Such errors clearly shows that end of synchronization of Exchange mailboxes with Outlook application even when after connectivity between the two.

The most possible reasons behind, damage of OST profile, inapt profile settings, a specific folder not synced, network problems, large sized OST file and many more. Thus, the solution needed to fix “OST file not updating” error.

Suggested Solutions to fix “OST file not updating” error

We are trying to proffer some of the most effective solutions to resolve the error “OST file not updating”. Below are some out the solutions that can tried in this scenario:

  1. Recreate the OST file
  2. Rename the OST file
  3. Check Outlook profile settings
  4. Re-synchronize OST folders
  5. Repair the OST file (different for different Outlook versions)
  6. Use a professional solution to recover OST file data

First Solution: Recreate the OST file

  • If OST file failed to update then try to recreate it as Exchange Server creates a new updated OST file when configured with MS Outlook.
  • Note: Take backup of OST file consisted of Exchange data to overcome data loss
  • Start MS Outlook application on your system.
  • Move to File << Account Settings << Account Settings.
  • The Account Settings dialogue box will open. Choose the Exchange OST data file and click on the Open File Location option
  • Or else go to the default OST file system drive location at %LOCALAPPDATA%\Microsoft\Outlook
  • Find the file, select it, and click the ‘Delete’ option.
  • Now, restart the Outlook application and wait for the file to get updates.
  • Check the status of OST file whether it is up to date or not.

Second Solution: Rename the OST file

There is yet another way to recreate OST file which can renaming the existing Exchange OST file. When Exchange Server gets connected with MS Outlook application again, a new OST file but with the different name will automatically created.

It is recommended to close the running apps including MS Outlook. Make a search for OST file on your system C drive or else move to this default .ost file location.

  • drive:\Users\\AppData\Local\Microsoft\Outlook


  • drive:\Documents and Settings\\Local Settings\Application Data\Microsoft\Outlook

Once you reach the.ost file folder location, rename it to old.ost file or other desired name. Again start the Outlook application letting the Exchange Server synchronize with MS Outlook and creating a newly updated OST file.

Third Solution: Check Outlook Profile Settings

Inapt Outlook profile settings can also the reason behind the .ost file not updating. In this scenario, check for the correct Outlook profile settings using the process given below:

  • Start Microsoft Outlook.
  • Navigate to File << Account Settings << Account Settings.
  • Set .ost mailbox account as the default file under the Data Files tab.
  • Choose the mailbox account, click on the ‘Settings’ option.
  • In the next step, move to the ‘Advanced’ tab, confirm if the Use cached MS Exchange mode selected and if not then select it.  Click ‘OK’.
  • Close the application.
  • Lastly, restart the application and check if the issue still persists.

Fourth Solution: Re-synchronize OST Folders

You can synchronize the particular.ost file folder again. Follow the given below steps for this process:

  • Go to the Outlook application and choose the desired .ost file folder.
  • Go to the ‘Tools’ menu, click ‘Send/Receive’ tab, and choose This folder (Exchange Server) to synchronize it.
  • Synchronize all the folders by simply ‘Send/Receive All Folders’ option.

Note: Users can also go for automated synchronization and for this, click on Outlook Options. First move to the ‘Advanced’ option and then onto the right panel, click on the ‘Send/Receive’ option available under the ‘Send and Receive’ section. Lastly, on ‘Send/Receive Groups’ section, choose the option ‘Perform an automatic send/receive while exiting’ and click ‘Close’.

Fifth Solution: Repair the Exchange OST file

OST file damage is one of the prominent reasons behind it’s not getting updated or synchronized. In this regard, manual repair methods based on the Outlook version can tried out.

Repair .ost file in Outlook 2003 and 2007 versions (older editions)

In older Outlook editions, there is an inbuilt Scanost.exe tool also known as OST Integrity Checker tool. The location of this tool is as follows:

In Outlook 2003: drive:\Program Files\Common Files\System\MSMAPI\LocaleID

In Outlook 2007: drive:\Program Files\Microsoft Office\OFFICE12

Go to the above given location to start Scanost.exe application; ensure to close the Outlook application before launching this tool.

After this, choose the.ost file Outlook profile for repair. Also, choose the checkbox saying Repair Errors. Lastly, click on the Begin Scan option. The scan process of the.ost profile will get started, in case any error is encountered, will fixed automatically. Wait for the process to get complete.

Repair .ost file in Outlook 2010 and later versions (new editions)

In case, you have come across the.ost file not updated issue in the new Outlook versions, then follow the below suggested steps:

  • First, update the .ost mailbox folder via these steps.
  • Go to Outlook and right-click on the mailbox folder. Select the Properties option.
  • On the Folder Properties dialog box, choose the Clear offline items option. Click OK.
  • Move to the Send/Receive option on the top. click on the ‘Update Folder’ option.

Make use of the Inbuilt Repair Utility known as Scanpst.exe to scan and repair your.ost file up to 2GB file size. Inbuilt repair tool path location is given below:

  • C drive>>Program files(86)>>Microsoft office>>Office xx>> – for 64-bit system
  • C drive>>Program files>>Microsoft office>>Office xx>> – for 32-bit system
  • Start the Scanpst.exe application using above given path location. Click ‘Browse’ option to add the .ost file location. Click ‘Start’ option.
  • OST file will start scanning and after scan, it will display the error and related information (if any).
  • If any errors are found on the next dialogue box, choose the checkbox to take an advanced backup of the file, and click on the Repair option to solve the corruption issues.

Sixth Solution: Use a professional solution to recover OST file data

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The severely damaged.ost files can’t fixed via manual solutions. Thus, it suggested to use an external software utility to recover OST file data. You can choose OST to PST Converter. This application scans and fixes the damaged OST files and orphaned OST file as well. The tool has expertise to convert OST file into PST. The automated process will convert and repair data safely.

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