HAC2/which-release
Which release of HAC2 are you running?
Go to My Games->HAC2 - you can find this by typing "my games" into the Windows search bar. Edit the file HAC2.ini
The release is set to "stable" by default.
Currently (2026), there are 3 releases, alpha, beta and stable.
The loader, halonet_addons.dll, checks for updates and will download newly available updates automatically.