To fix this problem, delete all 4 JSON files along with logs file from %appdata%\Microsoft\teams.
Launch Teams again to automatically re-create the JSON files you just deleted.
verify if youre still having issues logging into Teams after doing that.
Many users confirmed this quick method worked for them so do give it a try.
It seems you should probably enable these options for Microsoft Teams to work properly.
Heres how to enable TLS 1.0 / 1.1 and 1.2:
4.
There you have five potential fixes to solve error caa30194 in Microsoft Teams.
If youre lucky, the problem will be gone after applying the first solution.