Outlook Error Code 0x80070021 In Windows 7/8/10

Microsoft Outlook Error Code 0x80070021:

Microsoft Outlook Error code 0x80070021 usually arises when one or another program associated with it, is running in the background when users try to copy their PST files.

In this article, we will be highlighting on how to fix Outlook error 0x80070021. This error code also arises for some users when they try to copy or backup the Outlook’s PST file to another folder.


I am getting the outlook error code 0x80070021 through the PST files. At the time Opened the outlook and receive the error message

“Cannot Start Microsoft Office Outlook. Cannot open the Outlook Window. The
set of folders cannot be opened. The file xxx\Outlook.pst cannot be accessed.”
Error Code 0x80070021

At that time my friend gets the same error code 0x80070021 because of backup. And also copy the outlook PST files are changes to another location then it gets locked. So how can unlock the file and getting the backup?

Reasons for getting the outlook error code 0x80070021:

Most of the cases we get error related Outlook versions. we will discuss below the reasons for getting the Outlook. In all versions of Windows like 7,8,8.1,10.

  1. Repair the corrupted and damaged outlook data
  2. Scan the infected files and remove malicious and spyware files.
  3. Recovers Outlook emails, data, etc.,
  4. Outlook users to access the scanning pst files.

The solution for the error code 0x8007002:

  1. Firstly, open the outlook email account through the id and password
  2. Secondly, go to the menu and click trust centre
  3. After this, change the COM Add-ins
  4. After that check, the windows email receiver  index and remove it
  5. Now, click on OK and re-open the outlook and run the backup
  6. Finally, Restart the computer and open the outlook

If you can follow all the above steps you can easily get the backup data. Similarly, solving the PST files issue.

In Conclusion, 

For instance, if you have problem in doing this method, we advise you to choose a Technical Support from us to help you better.

In addition, you can check the reviews of Assured assist from your friends and family.

I am sure any disaster that would have happened for few are due to their system hardware dependencies.

Technical support

Finally, we give you assurance about your money and the service. If you like to see the procedure for a paid support, you may ask the Tech available online here on this page.

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