The "WinDivert driver cannot be installed" error is fundamentally a security handshake issue between your application and the Windows operating system. In 90% of cases, , updating to the newest signed version of the driver, and adding an exclusion to Windows Defender will completely resolve the problem.
Go to > Advanced options > Startup Settings > Restart . The "WinDivert driver cannot be installed" error is
If you can tell me which specific application (like a VPN, game, or tool) is causing this error, I can provide more tailored steps, such as specific command-line instructions to reinstall the driver. WinDivert not working on Windows 10 20H2 #253 - GitHub If you can tell me which specific application
Clean, RestartRequired
This is the number one cause of the error. Starting with Windows Vista 64-bit and strictly enforced in Windows 10 and 11, Microsoft requires all kernel-mode drivers to have a . This signature is a digital "stamp of approval" that verifies the publisher's identity and that the driver hasn't been tampered with. This signature is a digital "stamp of approval"
In rare cases, Windows marks a driver as "bad" or "blocked" in the registry. This often happens after a crash involving WinDivert.