1. Check that you are connected to the Internet
2. Check you are logged into Teams and your microphone and camera are enabled
3. Ask event participants if they can see the shared screen
4. Check the event settings and confirm the type of screen sharing allowed
5. Make sure you have the most updated version of Teams
6. Try restarting Teams
7. Try quitting Teams and restarting your computer
8. Try using a different internet connection
9. If you're sharing PowerPoint, try using a different file format