If you are not able to share your screen during a Teams meeting on your desktop, here are some steps to follow:
Make sure your PC is up to date. Updates from Windows can provide compatibility updates for Microsoft Teams.
Check if your firewall settings are blocking your screen sharing.
Ensure your Microsoft Teams app is up to date.
If you are using the browser version of Microsoft Teams, make sure it up to date. Try the app version of Microsoft Teams.
Be sure the device you are trying to share has the correct screen settings.
Ensure all the drivers on your device are up to date.
Check if any antivirus or security software you use is blocking your screen sharing.
