We have replaced the Qtracker master server for HexenWorld. The new master server address is thyrion.hexenworld.org:27900. If you are a server admin, please modify your hexenworld config files to reflect the new master server. To continue using GS3D to query servers on the internet please apply this fix: gs3d-master-server-fix.reg
An annoucement was posted in the Qtracker forums that Gamespy emulation will be permanently shutting down on 8/1/17. The GS3D client provided with HeXen II will still function as intended. HeXenWorld relies on the Qtracker master server to make servers public in GS3D. We are working on a fix. Stay tuned.