How to Fix Microsoft Teams Error CAA20002

Microsoft Teams helps you stay organized, connected and informed so you and your team can work together easily. However, some users recently contacted us and asked how they could solve an error called CAA20002 on their Windows devices. It usually occurs when they attempt to sign in to their Teams account on their Windows PC as a different user. In case you are experiencing a similar problem, this guide will help you in resolving it.

How to Fix Microsoft Teams Error CAA20002

How to Fix Microsoft Teams Error CAA20002

To fix Microsoft Teams Error CAA20002, use the following workarounds:

1] Add Your Teams Account to Windows Account Manager

Microsoft Teams accounts are typically assigned by schools or organizations and are different from your personal Microsoft account. If your Microsoft Teams account is different from your Windows account, it is likely that the Windows account manager is causing problems.

To resolve the issue, add your Teams Account to Windows Account Manager using the below instructions:

  • Right-click on the Start menu and select Settings from the menu list.
  • From the left sidebar, click on the Accounts tab.

Access work or school

  • Go to the right side of the page and click the Access work or school option.

Add a work or school account

  • If you don’t see your Teams account, click Connect next to Add a work or school account.

Set up a work or school account

  • Now enter your credentials on the Microsoft account page and click the Next button.
  • Next, authenticate through the method that is most convenient for you.

If you find that the account is already present, disconnect and reconnect the account using the steps described above. After you add or reconnect the account successfully, log in to the Teams app and see if the problem still persists.

2] Clear Microsoft Teams Cache Files

Piling up cache files could also end up causing the issue. Therefore, if the above method does not resolve the issue, you may want to try clearing the Microsoft Teams cache files.

Before you proceed, make sure that you have completely quit the Teams app and it’s not running in the background.

  • Press the Windows+E keys to open the File Explorer window.
  • Now navigate to the following path:
  • You can also simply copy and paste the above path in the address bar and press Enter.
  • Now press the Ctrl+A button to select all the items.
  • Press the Delete button to clear the cache files.
  • A confirmation prompt will appear on your screen. Click on Yes to confirm the action.

Once you’re done, restart your computer. After your PC restarts, log back into your Teams account to see if the problem is resolved.

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Rishi, an ambititous undergraduate student, is passionate about finding and solving issues that appears in Windows, or other operating systems. He has a keen eye for detail when it comes to comparing different operating systems, smartphones, smartwatches, and other tech items.