The error is a safety mechanism by Windows to prevent network conflicts. While the prompt tells you to restart, the issue is usually that a background process is re-locking the driver file immediately upon boot. The "Clean Boot" method (Step 1) resolves this issue in 90
To resolve the "WinDivert driver cannot be installed" error without a full restart, you can manually force the removal of old service handles and registry entries that are blocking the new installation. 1. Force Stop and Delete the Service
The most common cause is a ghost service from a previous session that didn't shut down properly. Open Command Prompt as an Administrator and run these commands to clear it: sc stop WinDivert sc delete WinDivert
If you are using an older version (e.g., v1.0), the service name might be specific, such as WinDivert1.0 . 2. Clear Residual Registry Entries
If the commands above fail, manually removing the service key from the registry often bypasses the need for a reboot, as suggested by developers on GitHub . Press Win + R, type regedit, and hit Enter.
Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinDivert. Right-click the WinDivert folder and select Delete. Retry your application. 3. Verify File Integrity and Permissions
Ensure all required driver files are present in the application's root folder. Missing files often trigger generic "installation failed" errors.
File Check: Verify that WinDivert.dll, WinDivert64.sys (or WinDivert32.sys), and WinDivert.inf are all in the same directory .
Admin Rights: Always run the host application (like GoodbyeDPI) as an Administrator to allow driver injection . 4. Advanced System Compatibility The error is a safety mechanism by Windows
If the error persists, check these system-level security features:
Core Isolation: Disable Memory Integrity in Windows Security (Device Security > Core Isolation) as it can block low-level drivers like WinDivert .
Digital Signatures: If you are using a custom-built version, Windows will block it unless Test Signing mode is enabled via bcdedit /set testsigning on .
For more specific troubleshooting regarding driver opening failures, you can check the community-sourced solutions on Stack Overflow . WinDivert not working on Windows 10 20H2 #253 - GitHub
Solving the "WinDivert driver cannot be installed" Loop If you are seeing the error "WinDivert driver cannot be installed, you must restart your computer" even after multiple reboots, you are likely stuck in a driver conflict loop. This issue often occurs when using tools like GoodbyeDPI, Zapret, or various VPN and network filtering applications that rely on the WinDivert utility.
Below is a breakdown of why this happens and the specific steps you can take to clear the error without endlessly restarting. Why Is This Happening?
WinDivert is a kernel-mode driver that is loaded "on demand" by applications. The "must restart" error usually stems from one of three issues:
A "Zombie" Service: An older version of the WinDivert service is still registered in Windows but points to a file that no longer exists or is incompatible. “Piece regarding WinDivert driver cannot be installed
Digital Signature Blocks: Windows security features (like Memory Integrity) may be blocking the driver from loading because it isn't properly signed for your specific Windows version.
File Mismatches: The application is trying to use a 32-bit driver on a 64-bit system, or the necessary .sys files are missing from the app's directory. Step-by-Step Fixes 1. Manually Clear the Old Service
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.
WinDivert: What is the reason behind the error message "error
It sounds like you’re encountering a WinDivert driver installation error, often seen with tools like Proxifier, Charles Proxy, Fiddler, npm, or certain VPN/packet capture software on Windows.
The full error message typically reads something like:
“Piece regarding WinDivert driver cannot be installed. You must restart your computer.”
Here’s what that means and how to resolve it: Here’s what that means and how to resolve
If you have used a similar program before (e.g., switching from one ad-blocker to another), the old driver might still be "installed" but inactive.
If you’ve ever tried using a network monitoring tool (like NetBalancer, mitmproxy, Proxifier, Charles Proxy, or Windscribe VPN), you may have encountered the frustrating error:
"WinDivert driver cannot be installed. You must restart your computer."
This message typically appears mid-installation or when launching an application that relies on the WinDivert packet capture library. The error halts your workflow, prevents network redirection, and leaves you confused—especially after you’ve already rebooted once (or twice).
In this extensive guide, we’ll explore:
Sometimes Windows fails to delete the old WinDivert.sys or WinDivert64.sys files.
If you have restarted and the error persists, the Windows Registry might still think a reboot is pending due to a stuck operation.
How to check:
The error doesn’t always mean the driver is broken. It often indicates that Windows cannot load the driver because of one of the following:
If another application (like a firewall or VPN) holds an open handle to WinDivert64.sys, the driver cannot be replaced or installed until that process ends.