The error "WinDivert driver cannot be installed, you must restart your computer" generally occurs when an older version of the WinDivert service is still registered in the system or if active processes are preventing a fresh driver from loading. Because WinDivert is a kernel-mode driver, Windows often requires a reboot to clear locked memory or stubborn registry entries that point to non-existent or conflicting file paths. Common Causes for the Error
are all in the same folder as your application's executable. Architecture Match : Ensure you are using the 64-bit driver ( WinDivert64.sys The error "WinDivert driver cannot be installed, you
Note: If you use a versioned name like "WinDivert1.0", use that exact name in the command. Check for Conflicts Look under Windows Logs → System for Service
Steps to clear the driver cache:
Once you have successfully installed your application, follow these best practices to avoid seeing the "WinDivert driver cannot be installed" error again: are all in the same folder as your application's executable
The "WinDivert driver cannot be installed" error typically occurs when a previous version of the driver is stuck in memory or the Windows registry, or when core security settings block its execution. Common Causes for Installation Failure
// Log error, assume clean if check fails to prevent blocking user