Microsoft Teams Error CAA20003: 13 Ways to Fix Sign-In
Quick Fix Microsoft Teams error CAA20003 is a sign-in problem. To fix it: Clear Teams cache – close Teams completely, press Windows+R, type %appdata%\Microsoft\Teams, delete all files inside, then restart Teams. If that doesn’t work, sign out of all Microsoft 365 accounts and sign back in. This fixes CAA20003 for most users. What Is Microsoft…