Microsoft Teams Error Code CAA20002: How to Fix It

Multiple device login is a common trigger for this error

by Loredana Harsana
Loredana Harsana
Loredana Harsana
Managing Editor
Loredana is a passionate writer with a keen interest in PC software and technology. She started off writing about mobile phones back when Samsung Galaxy S II was... read more
Reviewed by Alex Serban
Alex Serban
Alex Serban
Windows Server & Networking Expert
After moving away from the corporate work-style, Alex has found rewards in a lifestyle of constant analysis, team coordination and pestering his colleagues. Holding an MCSA Windows Server... read more
Affiliate Disclosure
  • Accessing Microsoft Teams on a VPN connection could trigger the caa2002 error code.
  • Try using password managers with 2FA for your Microsoft accounts to reduce the risk of compromising your account.
  • Avoid logging in to Microsoft Teams on too many devices.
microsoft teams error code caa20002

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Microsoft Teams might be slowly replacing Outlook due to the features and capabilities of the app. However, like Outlook, MS Teams has a few occasional errors. 

If you’re currently experiencing the Microsoft Teams error code caa20002, this post will provide you with the steps to resolve the error.

What causes the Microsoft Teams error code caa20002?

MS Teams’ code caa20002 is similar to Microsoft outlook error code caa20002. The following are a couple of reasons causing code caa20002 error on MS Teams:

  • Poor Internet connection – Microsoft Teams requires a strong internet connection to launch the app. If your PC can’t connect to network, you’ll need help accessing Microsoft Teams.
  • Corrupted files – If corrupted cache files are in the Microsoft Teams folder, the error caa20002 might be triggered.
  • Compromised Password – If Microsoft detects that your Microsoft Teams password has been compromised, it might prevent you from accessing the app, thereby resulting in the Microsoft Teams error code caa20002.
  • Multiple device logins – If you’re logged in to Microsoft teams on too many devices, you might run into the caa20002 error code. 

How do I fix the  Microsoft Teams error code caa20002?

Before we proceed to more advanced solutions, here are some quick fixes you can attempt:

  • Fix network congestion.
  • Turn off your VPN if you’re using any.
  • Close and relaunch the Microsoft Teams app.

If those steps couldn’t resolve the error, here are some advanced fixes you can try:

1. Clear Microsoft Teams cache

  1. Right-click on the Start and click on Task Manager.
  2. Locate the processes of Microsoft Teams, select it, and click End task.
  3. Press Win + R on your keyboard to open the Run program, type %appdata%\Microsoft\teams inside the box, and hit Enter key. 
  4. Delete the folders named: application cache, blob_storage, Cache, databases, GPUcache, IndexedDB, Local Storage, and tmp. 

Clearing the Cache should relieve the Microsoft Teams app of corrupt files or folders and prevent the caa20002 error code from popping up.

2. Log out of third-party Devices

  1. Type in Microsoft Teams in the Windows Search bar and hit Enter.
  2. Navigate to your Profile Picture at the top right corner of the app and select Sign Out.

Repeat this for every secondary device you’ve signed in with your MS Teams credentials.

After logging out of the devices, you’ll need to sign in with your credentials to gain access to Microsoft Teams.

3. Change MS Teams Password

  1. Visit Microsoft’s account page to sign in. Sign in using the same credentials for Microsoft Teams.
  2. Go to Security from the navigation bar and submit your password again.
  3. Locate the Password Security tab and select the Change my password option.
  4. On the Change my Password page, type in your Current Password, then the new one. Click Save
  5. Relaunch MS Teams.

If you try to reset your Microsoft password and you run into errors, here is a guide to help you fix Microsoft password reset doesn’t work.

4. Reinstall Microsoft Teams

  1. Press Windows + R keys to open the Run dialog box, type appwiz.cpl, and click OK to open the Programs and features.
  2. Select Microsoft Teams and click Uninstall. Click Yes to confirm.
  3. Follow the instructions on the Installation Wizard to finish the uninstall.
  4. Download Microsoft Teams from the official Microsoft website and click on Download for Desktop. 
  5. Open the file and follow the instructions to reinstall it.

Reinstalling Microsoft Teams should automatically fix any errors that existed previously. However, you should delete the app when you’ve attempted all the fixes without getting a positive result.

If you still can’t resolve the error after attempting all our fixes, you can launch the web version of Microsoft Teams until you get the error fixed.

With these solutions, you should be able to fix the Microsoft Teams error code caa20002 easily. If you need further guidance or have questions, kindly drop them in the comments section.

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