Windivert - Driver Cannot Be Installed You Must Restart Your Computer

The error "WinDivert driver cannot be installed you must restart your computer" typically occurs when a previous version of the driver is stuck in memory or a registry conflict prevents the service from initializing Quick Fixes & Troubleshooting Manual Service Reset

  1. Open regedit and go to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CI\Policy
  2. Look for BlockedDriverList – if WinDivert appears, delete its entry (back up first).

Windows 10 and 11 have aggressive security features that can prevent specialized drivers like WinDivert from installing, even after a reboot. The error "WinDivert driver cannot be installed you

Clean the Registry: If the error persists after a reboot, manually delete the registry key: Windows 10 and 11 have aggressive security features

Restart your computer immediately after this step to clear the system's memory of the driver. 3. Adjust Modern Security Settings delete its entry (back up first).

  • Open Device Manager (Press Windows key + X and select Device Manager).
  • Expand the "Network Adapters" section.
  • Right-click on each network adapter and select "Disable device."

Modern Windows security can block older or unsigned drivers. Go to Settings > Privacy & Security > Windows Security. Select Device Security > Core isolation details. Toggle Memory Integrity to Off. Restart and attempt the installation again. 4. Verify File Placement

Caution: Forcibly deleting pending rename entries can cause system instability if legitimate pending operations exist (e.g., from Windows Update). Validate the registry value’s contents first.

The error "WinDivert driver cannot be installed you must restart your computer" typically occurs when a previous version of the driver is stuck in memory or a registry conflict prevents the service from initializing Quick Fixes & Troubleshooting Manual Service Reset

  1. Open regedit and go to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CI\Policy
  2. Look for BlockedDriverList – if WinDivert appears, delete its entry (back up first).

Windows 10 and 11 have aggressive security features that can prevent specialized drivers like WinDivert from installing, even after a reboot.

Clean the Registry: If the error persists after a reboot, manually delete the registry key:

Restart your computer immediately after this step to clear the system's memory of the driver. 3. Adjust Modern Security Settings

Modern Windows security can block older or unsigned drivers. Go to Settings > Privacy & Security > Windows Security. Select Device Security > Core isolation details. Toggle Memory Integrity to Off. Restart and attempt the installation again. 4. Verify File Placement

Caution: Forcibly deleting pending rename entries can cause system instability if legitimate pending operations exist (e.g., from Windows Update). Validate the registry value’s contents first.