Occasionally, Windows incorrectly flags the driver signature.
She remembers: WinDivert is a kernel-mode driver . Windows locks driver installation when:
This issue commonly occurs when the WinDivert driver ( WinDivert64.sys ) fails to load or unload correctly, often due to permission issues, existing driver conflicts, or pending system updates.
Perform a complete restart of your computer. This forces Windows to unload the driver and clear the memory lock. 2. Run as Administrator Occasionally, Windows incorrectly flags the driver signature
: If the error persists after a reboot, the registry entry might be corrupted. Use regedit to navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinDivert and manually delete the WinDivert entry, then restart your computer. Common Root Causes
: Sometimes Windows thinks a file is waiting to be replaced after a reboot. You can clear this by deleting the PendingFileRenameOperations entry in the Registry Editor
—not a shutdown, a full restart.
are you trying to run when this error pops up?
If the application works after doing this, the bundled WinDivert driver is unsigned, and you must obtain an officially signed version to use it permanently. Conclusion
The "WinDivert driver cannot be installed" error is rarely a sign of a serious system issue. It's most often a conflict with Windows' robust security features, which are designed to protect you from malicious drivers. Perform a complete restart of your computer
If the error persists, check these system-level security features:
Lack of admin rights to install the service. Corrupt Registry/Files: Old driver entries are conflicting. Signature Issues: Windows blocked the driver.