Windivert Driver Cannot Be Installed You Must Restart Your Computer Top !!top!! (2026)

If you are launching the program via a .bat (batch) script, you must right-click the batch file itself and choose . Step 5: Fix System File Corruption

: If you are running this in a virtual machine (VM), some environments do not support the low-level driver access WinDivert requires.

This issue is common yet highly disruptive. WinDivert (Windows Packet Divert) is a powerful, legitimate user-mode packet capture and injection library for Windows. Software relies on it to manage network traffic. When Windows blocks or fails to register this driver, your application cannot function.

This error typically triggers when the system fails to load or register the WinDivert kernel driver ( WinDivert64.sys or WinDivert32.sys ) during the initialization of an application. While the prompt insists on a system reboot, a simple restart rarely solves the underlying root causes.

Because WinDivert intercepts network traffic, security suites often isolate the driver file, causing the installation routine to fail. Open > Virus & threat protection . If you are launching the program via a

Navigate to your application folder (where the .exe is located). Search for WinDivert64.sys or WinDivert32.sys . Delete these files.

Check if the driver file is locked. Go to C:\Windows\System32\drivers and look for WinDivert.sys or WinDivert64.sys . If it’s there, try to delete it manually. 2. Check for "Zombies" in Task Manager

Then restart your PC.

Windows 10 and 11 require drivers to be digitally signed by Microsoft. While official WinDivert releases are signed, some older or custom-compiled versions may trigger a signature error (sometimes misreported as the “must restart” message). WinDivert (Windows Packet Divert) is a powerful, legitimate

Test your application. If it works, you need to update your application to a version that packages a modern, officially signed WinDivert driver. Preventing Future WinDivert Failures

The "WinDivert driver cannot be installed" error is fundamentally a permissions or security conflict. In 90% of cases, or adding an exclusion to Windows Defender will immediately resolve the issue. If those quick fixes fail, manually purging the stuck service via the command line ensures a clean slate for the driver to install properly. To help narrow down the exact cause, please let me know:

Go to the official WinDivert GitHub or authorized repository. Download the latest stable release binary package. Extract the windivert.dll and windivert.sys files.

What (e.g., GoodbyeDPI, a specific VPN, or a custom tool) is triggering this error? This error typically triggers when the system fails

If the error persists after restart, run sc delete WinDivert (if it exists as a service) then reinstall. But 95% of the time, a single reboot is all you need.

Open File Explorer and navigate to C:\Windows\System32\drivers . Look for any file named WinDivert.sys or WinDivert64.sys .

Windows 10/11 requires drivers to be digitally signed. If you are using a modified or beta version of WinDivert, it might be blocked. Go to . Under Advanced startup , click Restart now .

The most effective fix is to manually stop and delete the existing service entry so the application can perform a "clean" install of the driver.