Gray Zone Warfare 0x0002000A: failed anti-cheat runtime check
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Last checked
October 1, 2026
The game closes or won't connect with "The client failed an anti-cheat client runtime check (0x0002000A)".
Also appears as: the client failed an anti-cheat client runtime check, failed an anti-cheat client runtime check, 0x0002000a, 0X0002000A, gray zone warfare anti cheat runtime check, grey zone warfare 0x0002000a
Easy Anti-Cheat found something on your PC it doesn't allow, or another program stopped it from running. MADFINGER's help centre names Razer Synapse 2.0 and reWASD as known causes.
MADFINGER also says a stale world-data cache triggers it after some patches, starting with 0.2.2.0. Clearing that cache and verifying the files fixes it.
Fix it, step by step
Clear the world cache folder, then verify game files
Delete the contents (not the folder) of
Gray Zone Warfare\GZW\Content\SKALLA\PrebuildWorldData\World\cachein your Steam library, then in Steam right-click Gray Zone Warfare > Properties > Installed Files > Verify integrity of game files. MADFINGER says this fixes the error after a patch.Close or uninstall Razer Synapse 2.0, reWASD and similar tools
MADFINGER lists Razer Synapse 2.0 and reWASD as programs that can trigger the check, and says removing them, or other programs that hook into games, may resolve it.
Sorted. Glad that worked.
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What people are saying
Notes from players who've hit this one — no time limit, an answer from months ago is still an answer.
- Nothing reported here yet.
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