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Error codeARC RaidersWindows PC
ARC Raiders: "Maximum Simultaneous Game Instances Reached"
A copy of the game is still running
Easy Anti-Cheat thinks the game is already running in the background, even when you can't see it.
Fix it
How to fix "Maximum Simultaneous Game Instances Reached"
Press Ctrl + Shift + Esc to open Task Manager.
Find the ARC Raiders process, right-click it and choose End Task.
Launch the game again.
If you can't find the process, restart the PC to clear the anti-cheat state.
From ARC Raiders's help pages: id.embark.games, in our words. Checked on 11 November 2026. If the steps do not help, ARC Raiders's own support is the next stop.
More
More ARC Raiders errors and common problems
- Matchmaking failsQueue never finds a raid or errors out
- Can't connect to serversOnline services fail to connect on PC
- Game keeps crashingOften old drivers or damaged game files
- Stuck on loading screenFrozen or black screen when the game starts
- Can't connect on consoleNetwork or NAT trouble on console
- Install or update failsPermissions or the firewall block the files
- 30005Easy Anti-Cheat can't start the game
- ARAV8007System integrity violation from changed game files
- Exit Code 0x3A damaged Cerebro.dll file
- Exit Code 0x1The game is set to run as administrator
All ARC Raiders errors and common problemsLive ARC Raiders status