The "Self protection failed error code 4" in x360ce (from 2021 to today) is not a hardware failure or a broken download. It is almost always a permissions or security conflict with Windows 10/11.
By systematically turning off Controlled Folder Access, moving x360ce to a writable folder, deleting legacy files, or reinstalling the ViGEm driver, you can resolve the error in under ten minutes.
If you are still stuck, remember: The x360ce community forums and Reddit (r/x360ce) are active. When asking for help, mention that you have already tried the "Fix 1" (Controlled Folder Access) – that will save everyone time.
Final Tip: After fixing the error and configuring your controller, always make a backup of x360ce.ini and the .dll files. If the error returns after a Windows Update, you can simply restore these files instead of reconfiguring your entire controller mapping.
Last updated: 2025. This guide applies to x360ce versions 4.10 – 4.17 and Windows 10/11.
The "Self Protection Failed - Error Code 4" in x360ce (version 4.x, popular around 2021) typically indicates that the software's security or driver-level modules are being blocked by the operating system or conflicting software. This error prevents the emulator from creating or modifying the necessary virtual driver files. Troubleshooting "Self Protection Failed (Error Code 4)" 1. Configure Windows Firewall Inbound Rules
The most common fix involves manually blocking the application's connection in the firewall to prevent it from failing its "self-protection" check during network-related initializations. Open Windows Defender Firewall with Advanced Security. Select Inbound Rules > New Rule.
Choose Program, click Next, and browse to the x360ce.exe file or the game executable causing the issue.
Select Block the connection and ensure Domain, Private, and Public are all checked. Name the rule (e.g., "x360ce Fix") and finish. 2. Run with Administrative Privileges
x360ce requires high-level system access to emulate virtual controller drivers.
Right-click x360ce.exe (and your game's launcher) and select Properties.
Under the Compatibility tab, check Run this program as an administrator.
If the application is in a protected folder like C:\Program Files, move the entire x360ce folder to a non-restricted location (e.g., C:\x360ce). 3. Resolve Software Conflicts
Certain loader proxies or anti-cheat modifications can trigger this error.
"Self-protection failed" "error code 4" · Issue #894 - GitHub
The "Self Protection Failed Error Code 4" is a recurring issue in the x360ce (Xbox 360 Controller Emulator) community, typically triggered when the software's security or self-defense modules are blocked from initializing. This error is common in the 4.x (2021 and newer) versions and often indicates a conflict between the emulator and system-level security or permission settings. Core Causes of Error Code 4
Permission Conflicts: The program lacks the necessary administrative rights to modify system-level input hooks. self protection failed error code 4 x360ce 2021
Security Interference: Windows Defender or third-party antivirus software flags x360ce’s behavior (emulating a virtual device) as suspicious and blocks its self-protection module.
Corrupted Files/Folders: Installation files in protected directories (like C:\Program Files) often fail to create necessary configuration files due to write restrictions.
Game-Specific Interactions: Some games with their own anti-cheat or online-fix modules (e.g., Forza Horizon 5, Elden Ring) clash with x360ce's attempt to hook into the game. Verified Fixes for x360ce (2021-2026) 1. Run as Administrator
The most frequent fix is ensuring the executable has full control. Right-click x360ce.exe. Go to Properties > Compatibility. Check "Run this program as an administrator". 2. Relocate to a Non-System Folder
Moving the software out of protected system directories often bypasses the error.
Move the x360ce folder to a simple path like C:\x360ce or your desktop.
Delete any old configuration files (x360ce.ini) and let the program regenerate them in the new, unrestricted location. 3. Firewall & Antivirus Exceptions
If the "Self Protection" fails, it is often because Windows Firewall is actively blocking the program. Open Windows Defender Firewall > Advanced Settings.
Create a New Inbound Rule for the x360ce.exe program and select "Block the connection" (counter-intuitively, some users find blocking its outbound communication stops the internal self-protection conflict).
Alternatively, temporarily disable the firewall to confirm if it is the culprit. 4. Check Virtual Device Drivers
In the 4.x versions, ensure the Virtual Device Driver (VDD) is installed correctly within the application settings. Open x360ce > Options > Virtual Device.
If the driver is missing or failing, click Install or Reinstall. Summary Table Recommended Action Permissions Set to "Run as Administrator" Directory Locks Move folder out of "Program Files" Antivirus Add x360ce as an exclusion Driver Failure Reinstall Virtual Device Driver via x360ce Options
For more specific troubleshooting, community discussions on Reddit's CrackSupport and the official x360ce GitHub Issues track ongoing bug reports and patches for newer Windows builds.
Here’s a post you can use or adapt for forums, social media, or a support ticket regarding the "Self Protection Failed Error Code 4" in x360ce (2021 version).
Title: Fix for "Self Protection Failed Error Code 4" in x360ce 2021
Body:
I ran into the "Self Protection Failed Error Code 4" while trying to use x360ce (2021) today. The error usually appears when x360ce tries to apply its DLL files to a game, but something blocks it.
After some troubleshooting, here’s what worked for me. Try these steps in order:
If nothing works: Try an older version (x360ce 4.10.x) or use a different wrapper like xOutput or DS4Windows.
Hope this saves someone else the headache. Let me know if you found another fix.
Summary
Reproduction Steps
Observed Behavior
Likely Root Causes
Technical Explanation (concise)
Diagnostic Steps
Mitigation & Fixes (ordered, try in sequence)
Recommendations for Developers/Maintainers
Safety & Legal Notes
Example Short Troubleshooting Checklist (for end users)
Appendix — Suggested Log Fields to Add (for maintainers)
If you want, I can:
"Self protection failed: error code 4" x360ce (2021/Version 4.x)
a common conflict that typically arises when the software attempts to hook into a game that has active security or firewall restrictions . This error often occurs when using with modified game files or "online fixes". Quick Fixes Run as Administrator : Right-click the x360ce.exe (or the game's if they are in the same folder) and select Run as Administrator Check File Integrity : Antivirus software sometimes deletes critical
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
Many users have found that blocking the game's connection through the Windows Defender Firewall prevents the "Self Protection" module from failing. Windows Defender Firewall from your Start menu and select Advanced Settings on the left. Inbound Rules
I have designed this to be posted on forums like the x360ce Official Forum, Reddit, or Steam Discussions.
Subject: [Help] x360ce Error: "Self protection failed (Error code 4)" on Windows 10/11
Body:
System Specifications:
Description of the Issue: I am encountering a critical error when trying to initialize x360ce. Upon launching the application (or the game), I receive the following pop-up message:
"Self protection failed. Error code: 4"
This prevents the emulator from hooking into the game, and the controller is not recognized.
Steps I Have Already Tried:
Request: Could someone explain what "Error code 4" specifically refers to in this context? Is this related to the Virtual Bus Driver or a conflict with another hooking software (like Discord Overlay or NVIDIA GeForce Experience)?
Any guidance would be appreciated. I have attached a screenshot of the error below.
Right-click x360ce.exe → Run as administrator. This gives it permission to write DLLs and hook into processes.
