You can't.

Go to novahq and go to files, download the BHD fixes (BHD No CD / Coop Me Now / Startup.htm (2025 Fixes))
For coop servers:
TIO 92 MOD = Mods > Black Hawk Down TIOcoop Mod 1.9.2 (LATEST VERSION)
You need to remove something but i forget what it was. BHD and TS server will work fine though if i recall

i strongly advise against downloading anything from these old sites to play a 22 year old game hahah its just not worth it brother man.

Hello Folks,

Here is a download link for a different Startup.htm. https://tiocoop.com/Ted/Startup.zip

Remove your Startup.htm file from your game folder, store it in a safe place, then re-place it with the one you downloaded.

After you click Join Game, you should see a page with two links. One is for Novaworld Login, the other is NovaHQ (Alternate Lobby). Click on the NovaHQ link, select a server to join.
Hope this helps.

Our Web Site has many resources for Black Hawk Down. https://tiocoop.com

You can play Black Hawk Down Co-Op or you can download our TIOcoop Mod and play advanced Co-Op games. Just download, install to your Black Hawk Down folder, then play.
The installer does everything for you, nothing for you to do, other then play.

TIOcoop Mod - https://tiocoop.com/?download=tiocoop-mod-v1-9-2

Our Web Site has full Mod Details.