QUERYcleaning up the puzzle gallery 0x11c7 application control policy

Application Control Policy Error 0x11C7: Safe Steps

DIRECT ANSWER

Update Windows and Microsoft Defender, install the latest Steam build, verify the game files, and report the block if it persists. The developer linked launch-day 0x11C7 reports to Windows 11 application control for a new unsigned executable. Do not permanently disable Smart App Control just to launch the game.

Reported code: 0x11C7
Windows feature: Smart App Control
Unsafe shortcut: Permanent disable

VERSION-SENSITIVElaunch issue; current prevalence unknownChecked 2026-08-09 CST

SAFE RESPONSE / 31

Preserve the security boundary

Try reversible update and integrity steps before changing security policy.

01
Update security intelligence
Apply current Windows and Defender updates.
02
Update and verify
Install the newest game build and verify Steam files.
03
Reinstall if needed
Use Steam’s normal install flow, not an unknown executable.
04
Report the block
Send the version and exact error through the game’s report path.

E1 source: Microsoft Smart App Control overview

Why this page exists: A Windows 11 player sees an application-control block and needs safe next steps without disabling a security feature.

What the developer and Microsoft say

The developer described a launch-day problem in which Windows 11 treated the new unsigned executable as unknown. Microsoft documents Smart App Control as a reputation and signing-based protection that can block unknown code.

Try reversible fixes first

Keep the response inside standard update, verification, and reporting flows.

Update Windows and Microsoft Defender.
Update the game, then verify files in Steam.
Reinstall through Steam if integrity checks do not help.
Report the exact code and current version.

Why this guide does not say ‘turn it off’

The developer declined to recommend disabling the feature. Microsoft also warns that restoring Smart App Control after turning it off can require resetting or reinstalling Windows, so a permanent disable is not a low-risk game fix.

SOURCE LEDGER / WINDOWS SAFETY

Follow every claim to its evidence.

E1 is first-party. E2 is a community observation or route. Later official updates can supersede version-sensitive details.

Publication limit: This is safety-oriented troubleshooting, not a guarantee of launch success; current issue prevalence and machine-specific causes are unknown.