Windows 11 feature
Smart App Control keeps blocking my games
Smart App Control is a Windows 11 security feature that only runs software it can verify as safe. When it can’t verify something — an unsigned game, an open-source tool — it blocks it, often with nothing more than “Smart App Control blocked an app that may be unsafe” or a code like 0x11c7. Here is how to get past it, and the catch to know first.
[!] Before you turn it off
Turning Smart App Control Off can be hard to undo — depending on your Windows version, re-enabling it may need a Windows reset, so update Windows first if you want that option. There is no way to exempt just one gamewhile leaving it on, so make sure you trust the software before you turn the check off.
Your two real options
Before either one, verify the game files in Steam — a corrupted install can look like the same failure and needs no security change at all. If that doesn’t fix it and it is a genuine Smart App Control block:
Direct · turn it off
App & browser control → Smart App Control settings → Off. The reliable fix — just know that, depending on your Windows version, re-enabling it later may need a Windows reset.
Or wait · a build Windows trusts
If the game is brand new, the developer may ship a signed or higher-reputation build that Windows allows on its own — no setting changed. Check the game’s Steam updates before deciding.
Questions
01How do I stop Smart App Control blocking games?+
First verify the game files in Steam to rule out a corrupted install. For a genuine block the fix is Windows Security → App & browser control → Smart App Control settings → Off, then relaunch. Smart App Control has no per-app allow-list, so there is no way to exempt a single game while leaving it on.
02Can I turn Smart App Control back on after turning it off?+
It depends on your Windows version. On newer builds you can usually turn it back on from the same setting; some older versions or device states require resetting Windows to re-enable it. Update Windows first if you want to keep that option, and only switch it off for software you trust.
03Why does Smart App Control block safe programs?+
It blocks anything it cannot positively verify. It checks a cloud trust signal first, and a valid company signature on the executable is one of the things it looks for. Legitimate but unsigned software — some indie games, plus tools like qBittorrent, FileZilla or Cheat Engine — can get caught the same way.
04What does 'Smart App Control blocked an app that may be unsafe' mean?+
It is the notification that accompanies the block: Windows could not verify the app as trusted, so it stopped it from running. It is the same mechanism behind Steam error 0x11c7, just shown as a Windows notification rather than a Steam code.