Since Electronic Arts shut down the online servers for Warfighter on February 22, 2023 , your local single-player save is now the only way to preserve your progress in the campaign. Quick Tips for Save Management
EA’s anti-cheat (FairFight) is mostly dormant, but editing multiplayer values can still result in an online ban if you play on official servers. Use hex editing for offline single-player only.
Even with a perfect setup, Warfighter throws errors. Here is the fix for the top three problems.