Can’t log in to Microsoft Teams- Error code – caa2000b

QUERY

No one in my organization can log in to Microsoft Teams. Our organization license is up to date, and Teams is enabled in Azure, but I am no expert in Azure, so I’m not sure why I have to muck around in it for an Office 365 account. All users are consistently receiving error code caa2000b. We are unable to log in to both the desktop and web client.

SOLUTION

If you can locate Microsoft 365 admin center > Users > Active users and check the licenses of a user, what licenses would the user have?

For example:

My account has a Microsoft 365 E5 license assigned, which includes Teams.

However, Teams has not included Microsoft 365 Apps for Business.

So you may need to ensure that you have an active license assigned which includes Teams.