Home ¬ How to ¬ Delete Outlook temporary files in Windows 10?

How to delete Outlook temporary files in Windows 10?

As the blog title suggests, we are going to learn the method (manual) to delete the temporary Outlook files for Windows 10 Operating System. But, we cannot just directly move to this method unless we know about the Outlook temporary files and the need for its removal. So, let us have a discussion.

What are Outlook Temporary Files?

Whenever the Outlook user opens or adds the emails’ attachments, a copy of these attachments gets stored at the sub-directory of the Outlook Temporary Internet Files folder. First, Outlook searches for the .OLK folder in the registry to save the temporary attachment files and if it does not exist, it creates the new folder itself. This takes place to ensure that received attachments are secured at another place.

The basic path location for this temporary internet file for attachments is

C:\Users\%username%\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Outlook\

Now, we know about the Outlook temporary files and its creation but, it is still not clear why we need to delete these files. Our next section would focus on the issues which could be created by these temporary Outlook files, which ultimately affect the Outlook performance.

Why do temporary Outlook files need to be deleted?

The Outlook user faces the following problems due to Outlook temporary files:

  • Security Risks – Sometimes, even if the attachments are deleted, opened and then closed or the Outlook has been shut down accidentally, then also the copy of these attachments get stored at the temporary folder location mentioned above. And, a person with knowledge of this location can easily gather the confidential information within these attachments. So, to secure your confidential or sensitive information from data theft, it is recommended to delete the temporary Outlook files from your system.
  • Disk Space – Sometimes, users cannot access the Outlook attachments they receive via emails as there is no space within the Outlook temporary files folder. It happens when a load of attachments has been received in Outlook with time, and the temporary file folder is untouched. It directly affects Outlook performance, and the user has to suffer. Hence, the user must delete the Outlook temporary files to fix ‘Outlook attachments unable to access’ issue.

These above-mentioned reasons point to the need for deleting the temporary Outlook files. Now, let us know how you can locate and then delete these files from the temporary folder created on your system.

Learn to delete Outlook Temporary Files

This would be the main section for the blog readers. It is not at all a task to delete the temporary files once you have located the files. The complete process is:

For different versions of Outlook, the OLK folder path is different which you can get directly from the registry key created by Outlook. To get the path address, open the Run window by pressing Windows+R and type regedit. Click OK. The Registry Editor page will get open. Here locate the registry key as per your Outlook versions by following the given paths.

Outlook 2016-
Outlook 2013-
Outlook 2010-
Outlook 2007-
Outlook 2003-

Reach up to Security location from the above path and double-click “OutlookSecureTempFolder” key on the right pane to open it.

Press CTRL and copy the file folder path.

Then, press Windows+E to open the Windows explorer page. On the top address bar, paste the copied path and press the Enter button on the keyboard. The temporary files are visible now. Just select and delete the ones which you want to; and for permanent removal, delete it from the Recycle Bin as well.

So, users can opt any of the above two ways to delete their Outlook temporary files to secure their Outlook data as well as avoid any issue with Outlook attachments. You can only fix the ‘attachments not opening’ issue if there is no case of corruption. For issues related to corrupted PST data, just try the most promising and efficient Kernel Outlook PST Repair tool. It can fix all PST corruptions very well and make your Outlook data available once again.


One copy of each Outlook attachment gets stored in SecureTemp folder as a temporary file. If it remains undeleted, these temporary files affect the Outlook performance and do not allow users to access attachments. By going to the temp folder location, these temporary files can be deleted easily.



Recommended Related Products
 Import PST to Office 365
Import PST to Office 365
Outlook PST Repair
Outlook PST Repair
PST File Splitter
PST File Splitter
How to delete Outlook temporary files in Windows 10?

Monitor Work from Home Employees with Employee Desktop Live Viewer.

Read More
  • Safe & Secure
  • 2 Million+ Happy Customers
  • Money Back Guarantee
  • Lifetime Free Support
Support Center



We Available At

Stay in touch
Subscribe Newsletter
HACKER SAFE certified sites prevent over 99.9% of hacker crime

Kernel® is a Registered Trademark of KernelApps Private Limited. © Copyright 2020 KernelApps Private Limited. All Trademarks Acknowledged.