0xcaa80000 Microsoft Teams Error: How to Fix It

The error code 0xcaa80000 in Microsoft Teams has been a major annoyance for many users who want to join a call or access their accounts. It usually reads We can’t connect you 0xcaa80000.

You might get it when certain security protocols aren’t enabled on your PC or you run an outdated MS Teams app. Regardless of the cause, the tricks below should help you fix it:

How can I fix 0xcaa80000 Microsoft Teams error

1. Update Microsoft Teams

1. Launch Microsoft Teams.
2. Click the 3 horizontal dots beside your profile.
   
3. Next, choose Check for updates.

If there is an available update, it will be automatically downloaded and installed without any action required on your part.

2. Omit the Microsoft Teams data

1. Close Microsoft Teams and make sure it’s not running in the background.
2. Right-click on the Windows icon and choose Run.
   
3. Type the following command and press Enter: %appdata%/Microsoft/Teams
   
4. Open the following folders and delete the files inside each of them:
   blob_storage
   Cache
   databases
   GPUcache
   IndexedDB
   Local Storage
   tmp
5. Lastly, try deleting the token binding key in the following directory:
   C:\Users\BobSled\AppData\Local\Packages\Microsoft.AAD.BrokerPlugin_cw5n1h2txyewy\AC\Microsoft\Crypto\TokenBindingKeys\Keys
fb47a8d42be514593f982d4b0d7edd08_90cb05ef-cd90-4066-aafe-3397eb8039a5_4068bc0f75fd0f09b9c2c7507f15f982 
6. Apply and restart the PC.

3. Change Internet settings

1. Click the Search icon from the Taskbar.
2. Search for internet options and run it and select Internet Options.
   
3. Navigate to the Advanced tab.
4. Check Use TLS 1.1 and Use TLS 1.2.
   
5. Apply the changed settings.

We hope that this guide has successfully resolved your issue. If you encounter any further impediments, we recommend referring to a similar Microsoft Teams error code CAA20002.

It would be immensely helpful if you could leave a comment below and let us know which solution worked best for you.