Windivert Driver Cannot Be Installed You Must Restart Your Computer «2025»

Temporarily disable any antivirus software, firewalls, or other network monitoring tools that might interfere with the Windivert installation.

The WinDivert driver may already be running because another application (for example, a VPN client running in your system tray) is using it. You cannot install a new driver over an active one. The installer detects the driver is already loaded and refuses to proceed. If the error persists, proceed to Step 2

Ensure that you are using the latest version of the WinDivert driver: If the error persists

If you have not restarted your PC recently (or if a previous installation failed), do a full shutdown and reboot. Temporarily disable any antivirus software

If the error persists, proceed to Step 2.

Ensure that you are running the WinDivert driver installation as an administrator:

Some VPNs or traffic‑shaping tools install their own network filter drivers that clash with WinDivert.