Geting an error login on Microsoft Teams (Error code 80090016)

Hello Marvin, 

Thanks for the help, but I contacted Microsoft support by phone, and they helped me to solve my problem.

I'm sending the solution below in case someone have the same problem.

1. Quit the local Microsoft Teams application completely. To do this, right click on the icon on the toolbar and click "Exit" or run the Task Manager and end the Microsoft Teams process.

2. Go to File Explorer, and type% appdata% \ Microsoft \ teams there. (you can also enter the folder by pressing the windows key on the keyboard + R by copying the address above and clicking the enter)

3. Once inside the directory you will see some of these folders below:

• In ‘Application Cache’, go to Cache and delete all files from this location. “% Appdata% \ Microsoft \ teams \ application cache \ cache”

• In ‘Blob_storage’, delete any files from this location, if any. "% Appdata% \ Microsoft \ teams \ blob_storage"

• Within ‘Cache’, delete all files “% appdata% \ Microsoft \ teams \ Cache”

• Within ‘databases’, delete all files “% appdata% \ Microsoft \ teams \ databases”

• Within ‘GPUCache’, delete all files “% appdata% \ Microsoft \ teams \ GPUcache”

• Within ‘IndexedDB’, delete the .db file “% appdata% \ Microsoft \ teams \ IndexedDB”

• Within ‘Local Storage’, delete all files “% appdata% \ Microsoft \ teams \ Local Storage”

• Finally, being ‘tmp’, delete any file in the locations:

• “% appdata% \ Microsoft \ teams \ tmp”

•% LocalAppData% \ Google \ Chrome \ User Data \ Default \ Cache

•% LocalAppData% \ Google \ Chrome \ User Data \ Default \ Cookies

•% LocalAppData% \ Google \ Chrome \ User Data \ Default \ Web Data

• Delete temporary Internet Files from Internet Explorer (Temporary Internet Files)

• Delete cookies from Internet Explorer Cookies