While Error Code 4 can be a frustrating barrier for gamers using older controllers, it is rarely a terminal issue. By systematically addressing permissions and security conflicts, most users can restore full functionality to their emulation software. Fix self-protection failed. Error code: 4
Windows Defender or third-party AVs often flag the "hooking" behavior of x360ce as malicious. Step-by-Step Solutions 1. Install or Reinstall ViGEmBus self protection failed error code 4 x360ce 2021
Windows Defender or a third-party antivirus saw x360ce trying to "inject" code into a game and thought it was an attack, blocking the self-protection service. While Error Code 4 can be a frustrating
files required for the emulator to function. Check your quarantine or re-extract the x360ce files into the game's directory. Primary Solution: Firewall Block Strategy Error code: 4 Windows Defender or third-party AVs
Right-click x360ce.exe → . This gives it permission to write DLLs and hook into processes.