By default, the Outlook data file resides in your local user's "Documents" folder. In the Folder Pane, you might see a folder named Recovered Personal Folders that contains your default Outlook folders or a Lost and Found folder. Although the repair process might recreate some of the folders, they may Fix Outlook and Office365 Sync Issues be empty.

Open Outlook in safe mode and disable add-ins

Before joining Secure Data, he worked as a freelance technical writer. If you moved your data file or its location changed somehow, Outlook might not be able to find it. I am transferring all my files from a Windows 10 PC to a new Windows 11 PC and am having issues moving my Outlook .PST files for POP accounts.

• Lastly, if you cannot access an OST file in Outlook, then you can try to export it to any other application instead.
• Throughout his career, he has covered complex concepts and provided accessible solutions for users.
• That is almost definitely the problem and it's very common unfortunately.
• You may need to move the Outlook data file back down from OneDrive.

Part 2: Common Accessibility Errors with Outlook

Before you change any settings or troubleshoot further, use these steps to check your connectivity and settings, and try restarting Outlook and your computer. When you want to replicate a copy on the cloud, manually copy the PST in the OneDrive folder. This will result in one copy in the folder in OneDrive being used for backup purposes, and another copy in your Outlook client that can be kept open FixTechGuide Mailbox Repair Steps by Outlook.

Repair Outlook Data Files (.pst and .ost)

It is also important to have a look at some of the common accessibility issues encountered in Outlook and avoid this problem from happening again. Lastly, if you cannot access an OST file in Outlook, then you can try to export it to any other application instead. To do this, you can take the assistance of Stellar OST to PST converter. Now, in the Outlook Options window, just go to the "Manage" section, and select "COM Add-in" from the list.

Step 2 - Create a new Outlook profile

If repairing the file doesn’t solve the issue, you can try creating a new Outlook profile and adding your existing file to it. This could help if you’re dealing with configuration issues but the file itself FixTechGuide support for Office 365 is okay. Once you have found the Outlook.exe file, right-click, and go to its properties. After getting the Properties window, just go to the "Compatibility" tab and make sure the "Run this program in Compatibility Mode" option is disabled.





I’m sure that after reading this post, you would be able to resolve the Outlook data file cannot be accessed issue. Whenever Outlook cannot access an OST file, I usually disable any firewall or get rid of unwanted plugins. Besides that, if you also cannot access OST files in Outlook, then you can try to repair it or simply convert it to a PST format. In this way, you can access your data on Outlook or any other email provider easily. At times, the Outlook data file cannot be accessed issue is caused by syncing errors between Exchange and Outlook. To overcome this, you can just turn off the cached mode in MS Exchange.

Error 0x8004010F when you try to send or receive email in Outlook 2010 or Outlook 2013

How your data is synched also depends on the type of account you have. POP accounts store information directly on your computer in Outlook .pst files. On the other hand, accounts through Office 365, Exchange Server, Outlook.com, and IMAP store information offline in Outlook data files (.ost files). It never feels great to run into an error message, especially if you’re in the middle of an important task.