Steam error code
0x11c7 is the code Steam shows when a Windows security policy blocks a game from launching. On a normal Windows 11 PC that policy is almost always Smart App Control, which stops programs it can’t verify as safe — an unsigned build being the usual reason. The code just means Windows wouldn’t run a file it couldn’t confirm as trusted — not that your download is broken or your PC infected.
▸ Fix it now
- First, verify the game files in Steam (right-click → Properties → Installed Files → Verify) to rule out a corrupted install.
- If it’s a genuine Smart App Control block: Windows Security → App & browser control → Smart App Control settings → Off.
- Relaunch from Steam. Turning Smart App Control back on can need a Windows reset depending on your version, so leave it off only for software you trust.
Full walkthrough on the main fix page.
Why it looks like a Steam error but isn’t
Steam surfaces the code because Steam launched the game, but the block is entirely on the Windows side. Smart App Control sits between you and any executable it can’t verify, and an unsigned indie build it doesn’t already recognise is the kind of thing it stops. That is why the same 0x11c7 shows up across unrelated games — it is a property of Windows, not of any one title. More on the feature: Smart App Control.
Other Steam launch error codes
- 0x11c7
- 0x3008
- 0x4c7
- 0xc00007b
- 0x3000
0x11c7 and the Smart App Control block are covered here; the rest are separate launch faults.
Questions
01What does Steam error 0x11c7 mean?+
It means a Windows security policy blocked the game's file from running. On a normal Windows 11 home PC that policy is almost always Smart App Control, which stops programs it can't verify as safe. It is a Windows block, not a Steam fault, and the code alone does not prove the file is malware.
02How do I fix 0x11c7?+
Verify the game files in Steam first to rule out a corrupted install. If it is a genuine Smart App Control block, turn Smart App Control off in Windows Security → App & browser control → Smart App Control settings, then relaunch. There is no per-app exception, so the ways past it are that toggle, or Windows coming to trust the app — through a signed build or enough cloud reputation.
03Does 0x11c7 affect Palworld?+
Yes — 0x11c7 is not tied to one game. Any executable Windows can't verify can trigger it, and players report it on Palworld, Water You Doing? and other unsigned titles. The fix is the same regardless of the game.
04I get 0x11c7 on a work or school PC.+
Managed machines often have Smart App Control or an equivalent Application Control policy locked by an administrator, so you may not be able to change the setting yourself. On a locked-down PC the block may be unavoidable without admin help.