Ubisoft shut down Future Soldier’s official multiplayer servers in 2023. You cannot play matchmaking. However:
Cracked versions completely break co-op. Only legitimate copies with the LAN Fix can play together.
Instead of a cracked .exe, the community made a non-piracy patch that: Cracked versions completely break co-op
Where to get it: PCGamingWiki → Ghost Recon Future Soldier → Essential Improvements → Unofficial Patch 2.0 (direct download, no registration).
This is morally and legally safer than a “BlackBox crack” because it requires a legitimate copy to function. Where to get it: PCGamingWiki → Ghost Recon
Future Soldier crashes on CPUs with more than 8 logical cores (common on i7/i9/Ryzen 7/9).
If you're referring to a "black box" error or a game crashing without an error message: Cracked versions completely break co-op
The game uses legacy DirectX 9 and older C++ runtimes.