Temporarily disable your real-time protection. If the software works afterward, you will need to add the folder containing your application (and the WinDivert.dll / WinDivert64.sys files) to your Antivirus Exclusion List . 5. Verify Digital Signature Requirements

By following these steps, you should clear the "Must Restart" loop and allow the driver to hook into your network stack correctly.

If you are seeing the error you’ve likely encountered a stubborn roadblock while trying to run software like GoodbyeDPI , certain VPNs, or network traffic injectors .

(under Device Security > Core Isolation) if the driver is being blocked from loading Microsoft Support Common Causes to Check Driver Signature Enforcement

This error is notoriously frustrating because it often persists even after you have restarted your computer. You restart, launch the app, and are greeted with the exact same message.

The error message often appears when users try to run network tools like GoodbyeDPI , ReQrypt , or custom VPN software. This usually happens because an older version of the driver is stuck in memory, or Windows is blocking the new installation due to security settings like Memory Integrity . Why the Error Persists After Restarting A standard reboot doesn't always clear the issue if: