When attempting to launch DayZ through the official DayZ Launcher on Steam, the launcher immediately fails with the following error:

"Could not load file or assembly 'Utils, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. An Application Control policy has blocked this file. (Exception from HRESULT: 0x800711C7)"

System information:

• Operating System: Windows 11

• Windows Smart App Control: Enabled

• Game Platform: Steam

• Affected executable: DayZLauncher.exe

• Blocked assembly: DayZ\Launcher\Utils.dll

Investigation results:

Windows Event Viewer reports Code Integrity Event ID 3077, confirming that DayZLauncher.exe attempted to load Utils.dll but Windows blocked it due to application-control policy or signing requirements.

The policy ID reported is:
0283AC0F-FFF1-49AE-ADA1-8A933130CAD6

Additionally, running Get-AuthenticodeSignature on Utils.dll in PowerShell returned:

Status: NotSigned

This confirms that the DLL does not have a recognized Authenticode digital signature.

Troubleshooting already performed:

• Verified DayZ installation files through Steam.

• Restored the original Utils.dll through Steam's file verification.

• Retried launching DayZ Launcher multiple times.

• Successfully launched the game using Steam's "Run DayZ Client" option.

The issue persists exclusively with the official launcher, while the game client itself functions correctly.

Please investigate the compatibility of the launcher's Utils.dll with Windows 11 Smart App Control and whether an appropriately signed component can be provided.

1. Use a Windows 11 system with Smart App Control enabled.

2. Install DayZ through Steam.

3. Open Steam Library and select DayZ.

4. Choose "Run DayZ Launcher".

5. Observe that the launcher fails immediately with an error referencing Utils.dll and HRESULT 0x800711C7.

6. Open Windows Event Viewer → Applications and Services Logs → Microsoft → Windows → CodeIntegrity → Operational.

7. Observe Event ID 3077 reporting that DayZLauncher.exe was prevented from loading Launcher\Utils.dll.

8. Verify that launching the game directly using "Run DayZ Client" works successfully.

Note: The issue was reproduced after verifying the installation files through Steam.

The official DayZ Launcher should start normally on Windows 11 systems with Smart App Control enabled.

The launcher should load its required components without triggering Windows Code Integrity restrictions, allowing players to access server browsing, mod management, and other launcher functionality without having to disable operating system security protections.