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.
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
Error Meaning
The message "windivert driver cannot be installed you must restart your computer" typically appears when using WinDivert (a packet capture/diversion library for Windows). It means the WinDivert kernel driver failed to load or install, often due to:
Why a restart helps
Restarting clears temporary file locks, resets the driver loading state, and allows Windows to finalize pending installation or removal operations.
What you can do instead of a paper
C:\Windows\System32\drivers\windivert.sys exists and is not locked by another process.If you need a literature review or technical explanation of WinDivert’s driver installation process for a paper you are writing, I can help outline the relevant topics, suggest references (e.g., Windows Driver Framework, kernel-mode signing requirements, and packet filtering architectures), or draft a section. Just let me know. Solving the "WinDivert driver cannot be installed" Loop
This is a very common and frustrating error, typically associated with software that needs to intercept or modify network traffic (such as VPNs, ad blockers like AdGuard, or firewall applications like SimpleWall).
Here is a review of the error message, what it actually means, and how to fix it.
If after trying these steps you're still unable to install the WinDivert driver, the issue might be specific to your system configuration or the software itself. Further troubleshooting might require delving deeper into system logs or reaching out to Microsoft support for Windows-specific issues.
To fix the "WinDivert driver cannot be installed" error without a full system restart, you can try manually cleaning up old service entries and files. This error often occurs because a previous version of the driver is stuck in a "zombie" state or its service is pointing to a path that no longer exists Quick Fix Steps Stop and Delete the Service Command Prompt as Administrator
and run these commands to force-remove the existing driver service: sc stop windivert sc delete windivert Note: If you are using version 1.0, the service name may be WinDivert1.0 Clean the Registry
: If the service commands don't work, manually delete the registry key: (Registry Editor). Navigate to:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinDivert Right-click and Check for Residual Files : Ensure there aren't conflicting files in your system folders. Search for WinDivert32.sys WinDivert64.sys in your program directory or C:\Windows\System32\drivers
and remove them if they are not in use by your current application. Security Software
: Check if an antivirus (like Sophos or Windows Defender's Core Isolation) is blocking the driver from loading. Review: WinDivert Rating: ★★★★☆ (Powerful but Temperamental)
WinDivert is an exceptional tool for developers and advanced users who need to capture, divert, and drop network packets on Windows without writing complex kernel-mode drivers. WinDivert not working on Windows 10 20H2 #253 - GitHub
The "WinDivert driver cannot be installed" error usually stems from corrupted, blocked, or leftover network-filtering drivers from VPNs or gaming tools, often resolved by launching applications with administrator privileges. Immediate fixes include stopping the WinDivert service, removing ASRock RGB software conflicts, or deleting the WinDivert registry key, as detailed on GitHub basil00/WinDivert issues page Stack Overflow AI responses may include mistakes. Learn more Pending file locks or previous driver state Incomplete
WinDivert: What is the reason behind the error message "error
The "WinDivert driver cannot be installed" error usually happens when a previous version of the driver is stuck in a half-uninstalled state or blocked by system security settings. While a simple restart is the first recommended step, it often doesn't clear the underlying service conflict or digital signature block. Troubleshooting the WinDivert Driver Error
Run as Administrator: Ensure the application using WinDivert is running with elevated privileges, as it cannot install or load drivers otherwise.
Force-Remove the Service: Use the Command Prompt (Admin) to manually clear the stuck driver: sc stop windivert sc delete windivert Restart your computer and try again.
Check Registry Entries: If the service commands fail, manually delete the WinDivert registry key:
Open regedit and go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinDivert. Delete the entry and reboot.
Security Software & Memory Integrity: Antivirus software (like Sophos) or Windows' Memory Integrity setting can block the driver. Try temporarily disabling Memory Integrity in Windows Security > Device Security > Core Isolation.
Digital Signature Issues: If you see "Error 577," Windows is rejecting the driver's signature. Updating Windows often resolves this by refreshing root certificates.
Blog Post: How to Fix the "WinDivert Driver Cannot Be Installed" Loop
If you're seeing the "WinDivert driver cannot be installed, you must restart your computer" message on repeat, you’re likely stuck in a "zombie service" loop. This driver, used by tools like GoodbyeDPI or FakeNet-NG, often fails because an older version didn't clean up after itself or Windows Security thinks it’s a threat. 1. The "Clean Slate" Method (Admin Prompt)
Most of the time, the driver is registered but not actually running. You can clear this by opening Command Prompt as Administrator and typing: sc stop windivert sc delete windivert Use code with caution. Copied to clipboard Why a restart helps Restarting clears temporary file
Restart your PC immediately after. This forces Windows to drop any "pending" installation requests. 2. Clear the Registry "Ghost"
If the command prompt doesn't work, the driver's ghost is in your registry. Search for regedit.
Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinDivert Right-click and Delete the WinDivert folder. 3. Disable Core Isolation
Windows 10 and 11 have a feature called Memory Integrity (part of Core Isolation) that blocks drivers it doesn't recognize. If your WinDivert version is older or unsigned, Windows will block it silently.
Go to Settings > Update & Security > Windows Security > Device Security.
Click Core isolation details and toggle Memory integrity to Off. Restart and try the installation again. 4. The "Missing File" Quick Fix
Sometimes the driver fails because WinDivert64.sys isn't where the program expects it to be. Try copying the .sys file from your program's folder directly into C:\Windows\System32\drivers to see if it bypasses the install error.
WinDivert: What is the reason behind the error message "error
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:
Win + R, type regedit, and press Enter.HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session ManagerIf the error implies the driver cannot be loaded (sometimes confused with "cannot be installed"), you may need to allow unsigned or test-signed drivers, though modern official builds of WinDivert are usually signed.
Win + R and type shutdown /r /o /f /t 1.