Microsoft Teams may sometimes crash with the error code CAA5004B.

This error indicates the app has run into an unexpected issue and could not complete the login process.

If the problem persists, follow the troubleshooting steps below.

microsoft-teams-error-caa5004b-fix

You should be able to access your account via the web or mobile app.

Unfortunately, when you have a go at enter next time, error CAA5004B may appear again.

Delete the Teams folders as shown above and take another crack.

microsoft-teams-appdata-folder

If your Teams account is not listed under Access work or school, add it manually.

As a result, youre unable to access your account.

Dont forget to re-enable your security tools after logging into your Teams account.

windows-11-access-work-for-school

Reinstall Teams

If you still cant access your account, reinstall Teams.

Go toControl Panel, selectUninstall a program, click onMicrosoft Teams, and then hit theUninstallbutton.

power cycle your system, and download the Teams desktop appfrom Microsofts official website.

uninstall-ms-teams-windows-10

If reinstalling the app doesnt solve the problem, contact your IT admin for further help.

Let them know what troubleshooting methods youve tried so far.

Then, go to Windows tweaks, and reconnect your Teams account.

Additionally, disable your VPN, antivirus, and firewall to ensure theyre not blocking the login process.

If the error persists, reinstall Teams and contact your IT admin.