Skip to main content

How to disable IPv6 - WKB9503

Article number: 9503


Disable IPv6 in the network card properties.


  • Windows Server 2012 R2
  • Unifi v1.8.2
  • Empower 3 server
  • LACE/E32


  • Download and run the attached file (DisabledComponents.reg) and follow the prompts, OR
  • Follow the steps below.

To disable certain IPv6 components, follow these steps:

1. Click Start, type regedit in the Start Search box, and then click regedit.exe in the Programs list. 

2. In the User Account Control dialog box, click Continue. 

3. In Registry Editor, locate and then click the following registry subkey: 


Note: If the DisabledComponents entry is unavailable, you must create it. To do this, follow these steps: 

  1. Double-click DisabledComponents to change the DisabledComponents entry. 
    1. In the Edit menu, point to New, and then click DWORD (32-bit) Value. 
    2. Type DisabledComponents, and then press Enter. 
    3. Double-click DisabledComponents. 
  2. Type ff in the Value data field, and then click OK.
  3. Reboot (after a reboot IPv6 will be disabled on all interfaces). 


Sometimes, clearing the Internet Protocol Version 6 (TCP/IPv6) check box in the network card properties does not fully disable the IPv6 address, as when you attempt to ping, an IPv6 address is still returned (instead of the expected IPv4). This procedure disables it in the registry. Ping localhost to see if it returns an IPv6 or IPv4 address to confirm the change was made.

refer to microsoft KB929852

This article was updated to reflect Microsoft's new guidance in KB929852 indicating DisabledComponents should be set to FF instead of the previously communicated FFFFFFFF. This will prevent a bootup delay of 5 seconds

Not able to find a solution? Click here to request help.