How do you check if TLS 1.1 or 1.2 is enabled?
Click on: Start -> Control Panel -> Internet Options 2. Click on the Advanced tab 3. Scroll to the bottom and check the TLS version described in steps 3 and 4: 4. If Use SSL 2.0 is enabled, you must have TLS 1.2 enabled (checked) 5.

 

 

Error code 0xcaa80000 indicates the Teams desktop app could not connect to Microsoft’s servers. To fix it, enable TLS 1.1 and 1.2 in Internet Settings, update the app and clear the cache. Additionally, close background programs and ensure your date and time settings are correct. Did you notice anything particular about error 0xcaa80000?