Try the following solutions:
- Make sure that you've connected the projector to the network and configured it correctly. Also, make sure you've registered the projector with EasyMP Monitor.
- Make sure that Standby Mode in the projector's Extended menu is set to Communication On.
- If you are using Windows, you must be logged in as the Administrator.
- Try restarting your computer.
Related references
Network Menu
Registering and deleting projectors for monitoring
Extended Menu