Microsoft Teams Error code caa70004 [Fix]

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. Microsoft Teams is a communication platform developed by Microsoft office; it allows your team to stay organized and have conversations. Although Microsoft Team is an excellent platform for discussion, customers can experience such errors.

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 be a number of reasons PC users are getting error codes on Teams. It could be that 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 who are faced with Microsoft Teams Error code caa70004 on Windows 11/10 systems can try our recommended solutions below in no particular order and see if that helps to resolve the issue.

Run Microsoft Teams with admin privilege
Run Teams in Compatibility Mode
Enable TLS in Internet Options
Disable VPN (if applicable)
Clear cache of Microsoft Teams
Enable Forms-based Authentication and WS-Trust in your ADFS
Use Teams Web version
Log out of Microsoft Teams and clear cache
Reset the Internet Options
Close background programs
Add your Office account to the user list.

Let’s take a look at the description of the process involved for each listed solution.

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. To enable the TLS, follow the steps below.

Type Internet Options in the search bar and select it from the pop-up panel.

Once the Internet Properties interface is open, select the Advanced Settings tab.

Under the Security section, check to see if you have TLS 1.1 enabled and TLS 1.2 enabled; if not, check their checkboxes to enable them.

Select OK to save the changes.

Try to run Microsoft Teams to see if the issue persists.

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:

%AppData%\Microsoft\Teams\cache

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 titled – Modern authentication failed, Status code 4c7 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 teams.microsoft.com. The web version works, and you can run Teams for multiple tenants.

8] Log out of Microsoft Teams and clear cache

The cause of the error may be due to the cache of files of Microsoft Teams, which consists of outdated data. To clear the cache, follow the steps below.

Sign out of your account and ensure that Microsoft Teams is not running in the background.

Press the Win + R key to open the Run dialog box.

In the dialog box, type %App Data%\Microsoft\teams\cache.

This will take you to the folder:

C:\Users\%yourname%\AppData\Roaming\Microsoft\teams\cache

Delete all files from this folder.

Try to launch Microsoft Teams to see if the error continues.

9] Reset the Internet options

You can fix the issue by resetting the Internet Options.

Sign out of your account and ensure that Microsoft Teams is not running in the background.

Then type Internet Options in the search bar and select it from the pop-up panel.

On the Internet Option interface, click the Advanced tab.

Then, scroll down and click the Reset button.

Close the window and try to launch Microsoft Teams.

10] Close background programs

Apps or programs running in your background might trigger Microsoft Teams causing the error to occur, and the solution is to close the apps. To close the apps, follow the steps below.

Go to Task Manager.

Once the Task Manager interface opens, click the Processes tab.

Then right-click the program you want to close and click End Task from the context menu.

Try to launch Microsoft Teams to see if the error continues.

11] Add your office account to the user list

Click the Start button and click Settings.

On the Settings interface, click Accounts.

Then click Access Work or School on the left pane.

Click the + Connect button on the right, then log in using your office 365 credentials.

Try to open Microsoft Teams again.

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 the required files.

How do I fix Microsoft Team error?

Specifically for IT admins, 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 instructions for resetting the Microsoft Teams app on a 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.

What is Microsoft Teams Error caa70004?

Microsoft Team error caa70004, We are sorry, we’ve run into an issue prevents you from logging into Teams and joining the discussion. Network issues usually cause it.

What are the causes for Microsoft Team error caa70004?

Some issues, such as network problems, caching issues, server issues, and sign-in problems, may cause Microsoft Teams error caa70004.

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