We are aware of an issue where the Server Browser in-game does not work, and we are working hard to fix it.

The cause of this bug is that the Server Browser expects to see a feed of servers under the Steam App ID 70, which isn't present. If you launch hl.exe directly from the Cross Product InstallDir, the SB works once again, but that's besides the point.

I have contacted Valve regarding this issue as it may be an engine-side problem.

Will keep you all updated.

Sabian