EasyAntiCheat Error 30005 (CreateFile Failed 32) Fix on Windows 11
Permanent fix for EAC Error 30005 StartService failed with 32 or 31. Resolve kernel driver lockouts, Antivirus false positives, and corrupt EasyAntiCheat.sys files.
Why Error 30005 Occurs: Kernel Driver File Locking
Error 30005 (CreateFile failed with 32) occurs when the EasyAntiCheat boot service tries to load EasyAntiCheat.sys into kernel memory, but another application or stale process has locked the file with exclusive access flags.
Step-by-Step Resolution
- Delete Corrupt Kernel Driver:
Navigate to
C:\Program Files (x86)\EasyAntiCheat\and deleteEasyAntiCheat.sys. When you launch the game next, the game client will pull a fresh signed binary. - Verify Windows Kernel Isolation Compatibility:
Open Windows Security > Device Security > Core Isolation details. If Memory Integrity (HVCI) blocks outdated driver signatures, update your motherboard BIOS and chipset drivers to 2026 certified versions.
- Repair EAC Service:
Inside the game installation directory (e.g.
SteamLibrary\steamapps\common\[Game]\EasyAntiCheat), right-clickEasyAntiCheat_Setup.exe, select Run as Administrator, and click Repair Service.
Liam Zhang
Security & Low-Level API Engineer Lab Bench VerifiedAll benchmarks and crash reproductions are conducted in our controlled hardware lab across standardized AMD AM5 and Intel LGA1700 test benches using clean Windows 11 installs.