The error in x360ce (2021 version) usually occurs when the program tries to apply DLL overwrites or hook into a game’s input system, but Windows security features or file permissions block it.
In the world of software, "Self Protection" is a defensive wall. For programs like , it’s a mechanism meant to stop other software (like antivirus or malware) from messing with its core files while it emulates your controller.
When x360ce launches, it attempts to initialize its self-protection mechanisms to prevent other software from tampering with the virtual driver. The error triggers when:
Windows updates can sometimes create compatibility issues.
Alternatively, download the latest standalone installer from the official GitHub repository, install it manually, and restart your PC. Alternative Solutions self protection failed error code 4 x360ce 2021
The (Xbox 360 Controller Emulator) is an essential tool for PC gamers who want to use non-XInput controllers (like PlayStation controllers, older gamepads, or flight sticks) to play modern games that only support Xbox 360 controllers. However, users often encounter the frustrating "Self Protection Failed Error Code 4" while setting up or launching the emulator.
Right-click x360ce.exe → . This gives it permission to write DLLs and hook into processes.
If you are still seeing the error, consider downgrading to the version of x360ce if your game is older (DirectInput), as the 4.x version is specifically designed for modern "Global" emulation.
If your game is on Steam, you do not need x360ce. Steam has a built-in, highly robust controller mapper. Add your non-Steam game to Steam as a shortcut, open Steam Big Picture Mode , and configure your controller layout from there. x version instead. Share public link The error in x360ce (2021 version) usually occurs
Select under the Virus & threat protection settings sub-header.
files in your directory (back them up first) and let the program regenerate them. Move to Desktop: In some cases, moving the executable to the instead of a protected Program Files folder fixes permission errors. If you'd like, tell me: are you trying to play? Are you using the Did this error start after an update
Antivirus programs frequently trigger false positives on x360ce due to how it hooks into input drivers. Open the and type Windows Security .
Select the entire folder where your x360ce.exe and game files are located. When x360ce launches, it attempts to initialize its
To rule out interference, temporarily disable your active protections.
Using a 32-bit (x86) version of x360ce with a 64-bit (x64) game, or vice versa. Step-by-Step Solutions to Fix Error Code 4
In the context of 2021, this error was frequently associated with the "ViGEm" (Virtual Gamepad Emulation) driver framework. As the x360ce project evolved, newer versions attempted to integrate more modern driver support. However, conflicts arose between the legacy DirectInput methods used by older controllers and the modern XInput standards simulated by ViGEm. When the software tried to bind the virtual controller to the physical device, the memory address space collision triggered the self-protection mechanism, resulting in Error Code 4.