🛡️ How to Fish Error 0x11C7 - Smart App Control Fix

Error 0x11C7 means Windows Smart App Control blocked the How to Fish executable from launching. This is a Windows security policy intercept — not a game crash, a save problem or a GPU issue. Fix it by updating Windows and verifying game files. Do NOT disable Smart App Control.

Smart App Control is a Windows 11 security feature that blocks unrecognized apps from running until they are verified. How to Fish is a legitimate Steam game, but Windows may flag it if the executable signature has not yet been widely trusted. The fix is to prove the file is legitimate — not to turn off security.

• Update Windows: Settings → Windows Update → Check for updates. Install all pending updates and restart.
• Update Microsoft Defender: it updates separately from Windows — make sure both are current.
• Restart Steam completely: exit Steam from the system tray, then reopen it.
• Verify game files: Steam Library → right-click How to Fish → Properties → Installed Files → Verify Integrity.
• Remove any third-party mods, replaced EXEs or custom launchers — Smart App Control flags these first.
• Try launching the game again after verification.

💡 If the error persists after all steps, check Windows Security → Virus & threat protection → Protection history for the specific block entry.

• Do NOT disable Smart App Control — it is a system-wide security feature and turning it off lowers your protection for all apps.
• Do NOT download unofficial EXE replacements from forums — these are the exact files Smart App Control is designed to block.
• Do NOT add the game folder to exclusions unless Microsoft Support explicitly advises it.

• Run the game as administrator: right-click the EXE → Run as administrator.
• Reinstall the game on a different drive — some users report the error is path-dependent.
• Check Steam community discussions for How to Fish — other players may have found a workaround for the latest Windows build.
• Contact Steam Support with a screenshot of the exact error 0x11C7 dialog.

💡 Error 0x11C7 appeared most often in the first weeks after launch (August 2026). If you see it on an up-to-date system, report it — the list of trusted signatures grows with each Windows update.