If you encounter a stale request error while attempting to log in to a University of Maryland service using CAS, it typically indicates that your session has expired or become invalid.

To resolve this issue, follow the steps outlined below.

1. Clear the cache and cookies of your browser.
   
   • Clear the Firefox cache.. 
   • Clear the Chrome cache.
   • Clear the Opera cache.
2. Quit and reopen your browser.
3. Use a private window in your browser.
4. Use a different browser.

Reach out to the Service Desk if you have any questions.