Again, the obvious first solution for login issues is to check that you're entering the right login information to connect to Teams. If you're sure the login information is correct, but are still being denied access, one of the following error codes may pop up in relation to the issue.
0xCAA20003: Authorization problem
Make sure the date and time are set up correctly.
0xCAA82EE2: Request timed out
Confirm you’re connected to the internet, and firewall issues aren’t blocking connectivity to the service.
0xCAA82EE7: Server not resolved
Confirm you're connected to the internet, and firewall issues aren’t stopping access to the service.
0xCAA20004: Request requires approval
Make sure that organization is complying with Azure Active Directory configuration policies.
0xCAA90018: Incorrect credentials
You are using the wrong credentials to sign in to Microsoft 365 services.
If you do receive one of these codes, please contact us.
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