Answer ID 4566
I am unable to launch a game on GeForce NOW for Mac or PC and see the error message 0x8008201c. How do I fix this?
If you are consistently seeing the error message 0x8008201c when attempting to launch games, a firewall may be preventing a connection to our game streaming servers. Please contact your internet service provider (ISP) or network administrator and ask if they have any restrictions on TCP or UDP traffic originating from the network ports between 10,000 – 20,000.