How to Fix the Microsoft Teams “CAA70004” Error in Windows 10 & 11

The “CAA70004” error in Microsoft Teams can be frustrating, as it prevents you from accessing the application and collaborating with your team. However, you can resolve this issue by following these steps:

1. Check Your Internet Connection

A weak or unstable internet connection can trigger the “CAA70004” error. Ensure that your internet connection is stable and has sufficient bandwidth to run Microsoft Teams smoothly. Try accessing other websites or applications to confirm that your connection is reliable.

2. Sign Out and Sign In Again

1. Open Microsoft Teams.
2. Click on your profile picture in the top-right corner.
3. Choose “Sign out.”
4. Once signed out, close the application completely.
5. Reopen Microsoft Teams and sign in with your credentials.

3. Clear the Microsoft Teams Cache

Clearing the cache can resolve various issues in Microsoft Teams, including the “CAA70004” error.

1. Close Microsoft Teams completely.
2. Press Win + R to open the Run dialog.
3. Type %appdata% and press Enter. This will open the Roaming folder.
4. Locate and open the “Microsoft” folder.
5. Inside the “Microsoft” folder, find and open the “Teams” folder.
6. Delete all the contents of the “Teams” folder but not the folder itself.
7. Restart Microsoft Teams and sign in.

4. Update Microsoft Teams

Outdated software can lead to compatibility issues. Ensure you are using the latest version of Microsoft Teams by following these steps:

1. Open Microsoft Teams.
2. Click on your profile picture in the top-right corner.
3. Choose “Check for updates.”
4. If updates are available, follow the prompts to install them.
5. After updating, restart Microsoft Teams.

5. Disable Proxy Settings

Proxy settings can sometimes interfere with Microsoft Teams. To disable proxy settings:

1. Press Win + R to open the Run dialog.
2. Type inetcpl.cpl and press Enter. This opens the Internet Properties window.
3. Go to the “Connections” tab.
4. Click on “LAN settings.”
5. Uncheck “Use a proxy server for your LAN.”
6. Click “OK” to save the changes.

6. Check Date and Time Settings

Incorrect date and time settings can cause authentication errors in Microsoft Teams. Make sure your system’s date and time are set correctly:

1. Right-click on the date and time in the taskbar.
2. Choose “Adjust date/time.”
3. Ensure that “Set time automatically” and “Set time zone automatically” are turned on.

7. Run Microsoft Teams as Administrator

Running Microsoft Teams with administrative privileges can resolve certain issues. Here’s how to do it:

1. Right-click on the Microsoft Teams shortcut or executable.
2. Choose “Run as administrator.”
3. Sign in to your account and check if the error is resolved.

8. Reinstall Microsoft Teams

If all else fails, you can try uninstalling and reinstalling Microsoft Teams:

1. Uninstall Microsoft Teams from your computer.
2. Download the latest version of Microsoft Teams from the official website.
3. Install the application.
4. Sign in with your credentials.

These steps should help you resolve the “CAA70004” error in Microsoft Teams on Windows 10 and Windows 11. If the problem persists, you may need to contact Microsoft support for further assistance.