Parsec Warp also includes Privacy Mode, which automatically turns off your physical monitors when enabled to keep what's on your screen private. You can upgrade to Warp to unlock virtual displays in Parsec's host settings that allows you to create up to two virtual monitors. If your laptop's tray is closed for example, the screen is automatically turned off and Parsec will not have a display. Check that computer physically and make sure that the screen is not turned off. Parsec needs a display to be able to capture it, and it must be on currently. The PC you're joining has no monitor or it's turned off Try the native application for your operating system instead. You should click 'Read more' next to the error message, and learn more about the error. An error eventually shows up after the black screen If your computer has an NVIDIA graphics card, try to change your decoder setting to something else in the Parsec settings, in the Client tab.
The person hosting the game can look into the Arcade issues article. Some games on Arcade Beta do not work well yet. In some cases, you may get a black screen when connecting to a computer, and you may be able to hear sound or see the mouse.