How to disable IPv6 in Windows Server

You can disable IPv6 at the level of a network interface or globally at the operating system level. In Windows Server 2019 follow the steps below:

  1. Run regedit.
  2. Navigate to registry key HKEY_LOCAL_MACHINE, SYSTEM, CurrentControlSet, services, TCPIP6 and Parameters.
  3. Right click on Parameters and select New and then DWORD (32-bit) Value. Name the new value DisabledComponents and hit Enter. Double click the new DisabledComponents value and select Modify.
  4. Set the value of DisabledComponents to FF and click OK. 
  5. After a reboot IPv6 will be disabled on all interfaces.

Also review Microsoft article KB929852 which states that DisabledComponents should be set to FF instead of the previously communicated FFFFFFFF.

IPv6, Windows Server
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