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Disable Windows IPv6 on the WSUS Server

Overview

This article explains how to disable IPv6 on WSUS servers when JetPatch encounters IPv6 IP addresses. 

Since JetPatch does not support IPv6 scenarios, you must disable IPv6 at both the network and system levels on all WSUS servers and replicas.

Disable IPv6 Using PowerShell and Registry

To fix it, complete the following steps:

Step1: Disable IPv6 in the Network Adapter

Use this PowerShell command (as admin):

Get-NetAdapter | foreach { Disable-NetAdapterBinding -InterfaceAlias $_.Name -ComponentID ms_tcpip6 }

You can check if IPv6 is successfully disabled using this PowerShell command:

Get-NetAdapter | foreach { Get-NetAdapterBinding -InterfaceAlias $_.Name -ComponentID ms_tcpip6 }

Step 2: Disable the IPv6 System Component from the Registry

  • Open the Registry Editor:
    • Click the Start button, type regedit, and press Enter.
  • Navigate to the Correct Registry Path:
    • Go to
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TCPIP6\Parameters
  • Create a New Registry Value:
    • Right-click on the Parameters folder, select New, and choose DWORD (32-bit) Value.
    • Name the new value DisabledComponents.
  • Modify the Registry Value:
    • Right-click on the new DisabledComponents value and select Modify.
    • Set the value to FF (hexadecimal) and click OK.
  • Reboot Your Computer:
    • Restart your computer to apply the changes. IPv6 will now be disabled on all interfaces, including loopback and tunnel interfaces.

Step 3: Verify IPv6 is Disabled

After reboot, check that IPv6 is correctly disabled by opening a CMD and try:

ping localhost

Alternative Method: Using Windows CLI

Open the command prompt in Administrator mode, run the following command, and reboot the computer:

reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters" /v DisabledComponents /t REG_DWORD /d 255 /f

Note: 

We have no plans to support IPv6 with WSUS, because in general, unless your domain network is properly configured to handle IPv6, there is no benefit to leaving it enabled as it would cause more harm than good when it comes to domain name resolution and networking.

Important: This script will reboot your system at the end of the process.

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