Fix Microsoft Teams Error code caa70004 in Windows 11/10 | #firefox | #chrome | #microsoftedge

If when you try to start the Microsoft Teams desktop app on your Windows 11 or Windows 10 computer, but receive the Error code caa70004, then this post is intended to help you with the most adequate solutions to fix the issue.

When you encounter this issue, you will receive the following error message:

Error code – caa70004
There’s a more permanent way to sign in to Microsoft Teams. If you’re having trouble completing the process, talk to your IT admin.

Why am I getting an error code on Teams?

There could a number of reasons PC users are getting error codes on Teams. It could be you’re not using the right credentials. The Windows Credentials you signed in with are different than your Microsoft 365 credentials. In this case, to resolve the issue, try to sign in again with the correct email/password credentials. If you continue to receive this status code contact your IT admin.

Microsoft Teams Error code caa70004

PC users that are faced with Microsoft Teams Error code caa70004 on Windows 11/10 system, can try our recommended solutions below in no particular order and see if that helps to resolve the issue.

  1. Run Microsoft Teams with admin privilege
  2. Run Teams in Compatibility Mode
  3. Enable TLS in Internet Options
  4. Disable VPN (if applicable)
  5. Clear cache of Microsoft Teams
  6. Enable Forms-based Authentication and WS-Trust in your ADFS
  7. Use Teams Web version

Let’s take a look at the description of the process involved concerning each of the listed solutions.

1] Run Microsoft Teams with admin privilege

You can begin troubleshooting of this Microsoft Teams Error code caa70004 by running Teams with admin privilege. Try the next solution if this didn’t work for you.

2] Run Teams in Compatibility Mode

This solution requires you to run Teams in compatibility mode and see if that helps. Proceed with the next solution if this wasn’t helpful.

3] Enable TLS in Internet Options

This solution requires you to enable TLS in Internet Options on your Windows 11/10 device.

4] Disable VPN (if applicable)

A VPN client or a Proxy server could trigger this error due to some kind of interference that ends up blocking communications between your Windows 11/10 client machine and Teams cconnection server. In this case, you can try uninstalling your VPN software via the Programs and Features applet on your system or remove any proxy server from your computer and see if that resolves the issue.

5] Clear cache of Microsoft Teams

To clear Microsoft Teams cache on your Windows PC, do the following:

  • Quit Teams from the notification area on the taskbar.
  • Next, press Windows key + R to invoke the run dialog.
  • In the Run dialog box, type or copy and paste the environment variable below and hit Enter:
  • At the location, press CTRL + A keyboard shortcut to select all the files in the folder.
  • Tap DELETE key on you keyboard or right-click the selected contents and select Delete for the context menu.
  • Once done, exit File Explorer.

Check if you can start Teams without errors. If the error reappears, try the next solution.

6] Enable Forms-based Authentication and WS-Trust in your ADFS

To enable Forms-based authentication, follow the instructions in this guide Modern authentication failed, Status code 4c7 – Microsoft Teams error. If the issue persists, try the next solution.

7] Use Teams Web version

If at this point nothing seems to work for now, your best workaround is to use the web version of Microsoft Teams at The web version works and you can be able to run Teams for multiple tenants.

Hope this helps!

How do I clear MS Teams cache?

For some reason PC users may want to clear the Microsoft Teams cache. To clear the Microsoft Teams cache on Windows 11/10, follow these instructions: Fully quit Microsoft Teams and ensure it’s not still running in the system tray/notification area in the taskbar. Next, navigate to %appdata%/Microsoft/Teams in File Explorer. At the location, select everything in the folder and delete the contents of the folder. Open Teams and wait for it to download required files.

How do I fix Microsoft Team error?

Specifically for IT admin, you can troubleshoot Microsoft Teams integration with customer engagement apps in Dynamics 365, by following these instructions: From the menu select Settings > Services & add-ins. Find Microsoft Teams and then enable External Apps. Set Allow external app in Microsoft Teams to On. Restart Microsoft Teams and then try searching for Dynamics 365 again in the Microsoft Teams app store.

How do you restart a Microsoft team?

Specifically intended for Mac users, you can restart Microsoft Teams by following these instruction for resetting the Microsoft Teams app in Mac using the Self Service app: Right Click on the Microsoft Teams Icon in the Dock. Select Quit. Select the MSU Branded Self Service app from the Launch Pad. Enter Teams in the search bar. Select Reset under Reset Microsoft Teams.

Related post: How to fix Microsoft Teams error code 500 on Windows 11.

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