• Oxford, Bicester
  • 01865 771011
  • 18:14

One of our customers in Oxford recently contacted me with an issue affecting their Microsoft Teams Windows Desktop app. They couldn’t access anything in the Files section of their Teams channels. The following error message would be shown instead.

Something went wrong
Please try again or refresh the page.
PrefetchFailure (-2147024891, System.Unauthorized.AccessException)

The issue was only affecting the Teams Desktop app. Web-version was displaying everything inside the Files Tab with no problems. This immediately ruled out permissions-related issues.

Logging out of Teams, restarting the computer, and even reinstalling Teams were not helping. What actually fixed the issue is deleting Teams folders from the user’s profile folders:

  • C:\Users\username\AppData\Local\Microsoft\Teams
  • C:\Users\username\AppData\Roaming\Microsoft\Teams

This resets Teams to a fresh install state, removing all cached files.

June 2024
Windows 11
Microsoft Teams for Desktop v24102.2223

Previous Post
Redirect website to new domain preserving URL paths
Next Post
Update MariaDB on Plesk web server

Leave a Comment