Resolving "Unauthorized" Error in Caesr Chat

Last updated: January 22, 2026

If you encounter an "unauthorized" error message when entering prompts in your Caesr conversation, this typically indicates that your session has expired or there's an authentication issue.

Quick Fix

The most common solution is to simply refresh your browser page. This will re-authenticate your session and resolve the unauthorized error in most cases.

For Desktop App Users

If you're using the Caesr Desktop App and refreshing doesn't work, try these steps:

  1. Log out of the application

  2. Log back in

  3. Reload the Caesr app

  4. Open app.caesr.ai again

Advanced Troubleshooting for Windows Users

If you continue to experience issues with corrupted messages or persistent authorization errors on Windows, you may need to clear your local chat data:

Warning: The following steps will delete all your saved chats.

  1. Stop the Caesr Desktop App completely

  2. Open Windows Explorer and navigate to %APPDATA%\caesr-desktop\

  3. Delete the chat folder

  4. Start the Caesr Desktop App again

  5. Open app.caesr.ai

When to Use Each Solution

  • Browser refresh: First try for any unauthorized error

  • App restart: If refresh doesn't work and you're using the desktop app

  • Chat data clearing: Only if you're getting specific error codes related to corrupted messages

Most unauthorized errors are resolved with a simple page refresh, so always try that first before proceeding to more advanced troubleshooting steps.