As of April 17th, 2023, Parsec Arcade has been shut down and is not available anymore. Instead there are a couple sites available to get similar or close-to-it features. One example is my site here. There are also two other Parsec Arcade replacement websites: Soda Arcade and TSBAR.

99	The computer you're connecting to is no longer available
6023 and 6024	Unable To Negotiate A Successful Connection
14003	Failed to Capture the Host Display
22006 and 15000	Unable To Initialize Encoder On Your Server