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How to fix "Offline Outlook OST is in use and cannot be accessed" Koler Jamesh . 11th Apr 2016 . 3 Reply

I am trying to open MS Outlook OST file using Outlook 2007 on Win XP but unable to open it because of the following error ".ost is in use and cannot be accessed". can anyone help me how to fix the issue and make my OST file accessible.


Answers -

If you are not able to access MS Outlook .ost files and getting error “OST is in use and cannot be accessed” while trying to access them. Then I would like to share with you an advanced third party Recoveryfix for OST to PST convert. This is an advanced solution to fix .ost files and make them accessible.

gerry cortez . 25th Jul 2016

If you are unable to resolve it using manual method, use third party OST to PST tool. You can resolve any issues regarding the OST file by Choosing a relevant third party OST to PST software which can preserve email properties, formatting and hierarchy during entire recovery process.

alyx mark . 16th May 2016

"Offline Outlook OST is in use and cannot be accessed" This error is displayed when the program is running in the background. In order to prevent it end programs from running in the background that is using the OST file. You can end the running programs  by following below mentioned methods.

  • Open Task Manager
  • Click the Processes tab
  • Check out running programs related with Outlook
  • Select the desired Outlook process, and then click the End task button.


Abel Cord . 25th Apr 2016
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