Before fixing the problem, it's helpful to understand what WinDivert is and why you're seeing this message. is a powerful, user-mode library that allows applications to capture, modify, and drop network packets. Because it works at a deep, kernel level, many tools for filtering, analyzing, or modifying network traffic rely on it to function.
Open Command Prompt as an administrator . Type the following commands, pressing Enter after each one:
Go to > Protection history to see if WinDivert was blocked. If blocked, select the action and click Allow on device .
cd C:\path\to\WinDivert WinDivert.exe -install Before fixing the problem, it's helpful to understand
Ensure all required files are in the same folder as your application: WinDivert.dll
Author’s note: Always reboot after each fix attempt. And if you’re on a managed work/school PC, contact your IT admin – they likely have driver policies in place.
// Check for PendingFileRenameOperations var value = key.GetValue("PendingFileRenameOperations"); if (value != null) Open Command Prompt as an administrator
Test your application to see if the driver installs successfully. Technical Recommendations for Developers
Windows blocks the driver because it lacks a valid, recognized digital signature or the certificate has expired. Step-by-Step Solutions 1. Run the Application as Administrator
Now, reinstall the application that was using WinDivert. This will typically reinstall the driver during the setup process. cd C:\path\to\WinDivert WinDivert
Manually removing the service key often breaks the "must restart" loop. Press Win + R , type regedit , and press Enter.
Download the WinDivert package from its official repository (e.g., github.com/basil00/Divert ). Extract and run as Administrator :
Open your application's folder and locate the WinDivert.sys or WinDivert64.sys file (often found in an x86 or x86_64 subfolder). Right-click the file and select .
