Sniper Elite 3 uses specific ports for P2P connectivity. Forward them to your computer’s local IP address.
Creating a copy of the executable and setting it to "Always run as administrator" has resolved persistent co-op issues for some players. 2. Network Configuration and NAT Type
: Configure your router to forward specific ports for Steam: : 8766, 27010, 27015-27016, 27036. : 8766, 27010, 27015-27016, 27031-27036. Verify Integrity Steam Library