Are you using a specific program like or a custom script when this happens? WinDivert not working on Windows 10 20H2 #253 - GitHub
: If the service commands don't work, manually delete the registry key: (Registry Editor). Navigate to: Are you using a specific program like or
This is a very common and frustrating error, typically associated with software that needs to intercept or modify network traffic (such as VPNs, ad blockers like AdGuard, or firewall applications like SimpleWall). After these steps, the dreaded message will no longer appear
After these steps, the dreaded message will no longer appear. If you are using a custom-built version, Windows
Some security software blocks kernel drivers. Temporarily disable your antivirus, reinstall the tool, then re‑enable it.
If you are using a custom-built version, Windows will block it unless Test Signing mode is enabled via bcdedit /set testsigning on .
WinDivert uses a test-signed certificate. On 64-bit Windows with Secure Boot enabled, driver signature enforcement may block unsigned or self-signed kernel drivers, causing the installation to fail.
