Windows & BSOD · critical

How to fixKERNEL_AUTO_BOOST_LOCK_ACQUISITION_WITH_RAISED_IRQL

Kernel auto boost lock IRQL error

What this error means

Kernel auto boost lock IRQL error (KERNEL_AUTO_BOOST_LOCK_ACQUISITION_WITH_RAISED_IRQL) is a critical-severity fault affecting the Windows operating system. This BSOD occurs when a driver attempts to acquire a kernel auto-boost lock while operating at an elevated IRQL (Interrupt Request Level). This violates Windows kernel locking rules. The error is almost exclusively caused by a buggy third-party driver — particularly security software, antivirus kernel drivers, or gaming anti-cheat systems that hook into kernel lock primitives. The steps below are ordered to resolve this efficiently.

Before you begin

Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 3 complete
01Uninstall recently installed security software

Uninstall recently installed security software.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

I need help
02Update or uninstall gaming anti-cheat software

Update or uninstall gaming anti-cheat software.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

I need help
03Check minidump in WinDbg to identify faulting driver

Check minidump in WinDbg to identify faulting driver.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

I need help

Possible causes

  • Buggy antivirus kernel driver
  • Gaming anti-cheat kernel driver conflict
  • Outdated system driver using deprecated locking APIs