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Arma 3 - BattlEye Driver Load Error (1275) due to Windows 11 "Hardware-enforced Stack Protection" Conflict

1

State

Open
Issue key
A3G-121
Access
Public
Space
Arma 3
Project
General
Creator
jerry
Created
Oct 14, 2026
Views
3
Issue Type
Bug/Error
Section
Game Version
2.22 (Current Stable)
Was this also present in the previous version?
I don't know / Not relevant
Severity
I can't play with this
Section
Operating System
Windows
Windows
Windows Version
Windows 11
Description

Description:
When trying to launch Arma 3 on the latest Windows 11 (version: [填入你的系统版本,如 24H2]), the BattlEye anti-cheat service fails to initialize. The game cannot start. The error prompt states: "Failed to initialize BattlEye Service: Driver Load Error (1275)."

Simultaneously, the Windows Program Compatibility Assistant blocks it with the message: "Unable to load driver on this device. Driver: BEDaisy.sys. The driver cannot load because it is incompatible with a Windows security mitigation called 'Hardware-enforced Stack Protection'."

Steps to Reproduce:

  1. Open Steam on Windows 11.

  2. Click "Play" for Arma 3. BattlEye attempts to load.

  3. The 1275 error appears, and the game fails to launch.

Workaround:
The only known workaround is to disable "Kernel-mode Hardware-enforced Stack Protection" in Windows Security -> Device Security -> Core Isolation, then reboot. However, this reduces system security.

Request:
Please coordinate with BattlEye to update the BEDaisy.sys driver to be compatible with Windows 11's Kernel-mode Hardware-enforced Stack Protection. Many Windows 11 users are currently unable to play the game. Screenshots of the errors are attached.

Attachment1 file · visible to everyone

屏幕截图_2026_10_14_135422.webp

55 KB

Reactions

Activity

    about 2 hours ago
  • jerry
    created issueabout 2 hours ago

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State

Open
Issue key
A3G-121
Access
Public
Space
Arma 3
Project
General
Creator
jerry
Created
Oct 14, 2026
Views
3