[Complete Guide] How to Fix Microsoft Teams Error CAA50021? - MiniTool

Meet Microsoft Teams error code CAA50021 ? This article provides a variety of effective solutions. Please read carefully and follow the steps.

Microsoft Teams is a popular chat-based collaboration platform that is mainly used in enterprises. With the help of this program, you can chat with others, attend meetings, share documents online, and more. But sometimes, you may fail and receive a CAA50021 error code when trying to access Microsoft Teams.

The CAA50021 error code may be caused by a variety of reasons. When this error occurs, you should take steps to fix it. Here are some solutions you can try:

Method 1: Temporarily disable antivirus software

The third-party antivirus software and Windows Defender firewall installed on your computer may identify Microsoft Teams as a threat, preventing you from accessing it. As a result, you will see the CAA50021 error on the screen. To bypass this error, you can temporarily disable the antivirus software.

Method 2: Re-register your device using Azure

If your device's registration on Azure has expired, Microsoft error code CAA50021 may also appear. In this case, you should resolve this error by re-registering the device with Azure. Here is a step-by-step guide:

Notice:

Step 1: Press Windows R key to open the run dialog box.

Step 2: Enter cmd in the text box, and then press Enter to open the command prompt .

Step 3: In the command prompt window, enter dsregcmd /leave and press Enter .

Step 4: Search the Admin user certificate in the search bar and open it from the best match . Then navigate to the current user\person\certificate and make sure that the MS-Organization-Access and MS-Organization-P2P-Access entries have been deleted.

Step 5: Return to the command prompt and enter dsregcmd /status . Then press Enter to check if the status of AzureAdJoined is set to No.

Step 6: After that, open the Task Scheduler and navigate to Task Scheduler Library > Microsoft > Windows > Workplace join . Now you should right-click Automatic-Device-Join in the middle section and select Enable .

Method 3: Link your device to your work/school account

The CAA50021 error code can also be fixed by linking your device to a work or school account. To do this, follow these steps:

Step 1: Press Windows and I keys to open Windows settings . Then select Account .

Step 2: Go to Access Work or School and click Connection on the right. Follow the on-screen instructions to complete the linking of your device to Azure.

Method 4: Delete Microsoft Teams credentials

Another way you can try to fix the CAA50021 error is to delete the credentials related to Microsoft Teams.

Step 1: Open Control Panel and go to User Accounts > Manage Windows Credentials .

Step 2: In the next window, scroll down to find all credentials associated with Microsoft Teams. Then expand them and click Delete to delete them one by one.

Step 3: After deleting all Microsoft Teams credentials, restart the computer to see if the error has been resolved.

Method 5: Update Microsoft Teams

Outdated Microsoft Teams applications may also cause CAA50021 error code. In this case, you can try to fix this error by updating Microsoft Teams to the latest version. To complete the update, you need to select Settings and more menus in the upper right corner of Teams. Then select Check for updates .

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All of the above solutions are feasible. When you encounter Microsoft error codes CAA50021, you can try them one by one until this error is fixed. If you have any other effective solution to this error, you can share it with us in the comments section below. We will be greatly appreciated.

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