Steps to Resolve Microsoft Teams Error Code 80090016

Step 1: Remove the Microsoft. AAD. BrokerPlugin Folder

Many users have resolved error code 80090016 by deleting the “Microsoft. AAD. BrokerPlugin” folder. Follow these steps:

• Press Windows key + E to open Windows Explorer.
• Copy this path and paste it in the address bar: C:\Users\User_Name\AppData\Local\Packages and press Enter.
• Locate the folder named Microsoft. AAD. BrokerPlugin_cw5n1h2txyewy.
• Copy this folder to your desktop and then delete it from the Packages folder. If prompted, click Yes to confirm.
• Should you lack other user accounts, create a new profile with administrative rights and repeat the process using the original username.
• Restart your computer to apply changes.

Pro Tip: Always back up important folders before deleting them to prevent data loss.

Step 2: Repair or Reset Microsoft Teams

If the issue persists, you might need to repair or reset Teams due to accumulated cache:

• Press Win + X and select Apps and Features.
• Find Microsoft Teams, click the three dots next to it, and choose Advanced options.
• Under the Terminate section, click the Terminate button to close any background Teams instances.
• Then, scroll down and click Repair followed by Reset.

Repair attempts to fix the application without affecting data. Reset removes all data from the app.

Step 3: Delete Local Microsoft Teams Folders

If issues continue, corrupted local files may be the culprit. Here’s how to eliminate them:

• Ensure that Microsoft Teams is fully closed, including any background processes.
• Open Windows Explorer and navigate to: %appdata%\Microsoft\Teams.
• Select all items within this folder using Ctrl + A and press Shift + Delete to remove them permanently.
• Restart your computer to see if the problem is resolved.

Step 4: Modify Registry Settings

This error can sometimes be linked to a registry setting:

• Launch the Run dialog box by pressing Win + R.
• Type regedit and hit OK to open the Registry Editor.
• Navigate to: HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity.
• Look for the entry named EnableADAL and change its value from 1 to 0. If it’s missing, create a new DWORD value named EnableADAL and set it to 0.
• Reboot your system for the changes to take effect.

Step 5: Uninstall and Reinstall Microsoft Teams

If all else fails, completely uninstall Microsoft Teams and then reinstall it:

• Right-click on the Windows icon and select Run, or press Win + R.
• Type ms-settings:appsfeatures and press OK.
• In the “Apps and Features” window, find Microsoft Teams and click the three dots next to it to select Uninstall.
• Confirm the uninstallation in the pop-up window and restart your PC to remove all residual files.

Next, reinstall Microsoft Teams from the official Microsoft Teams site.

What is error code 80090016 in Microsoft Teams?

Can reinstalling Microsoft Teams fix the error?