Enabling Extended Security Updates for Windows Server 2012

To obtain Extended Security Updates (ESU) for Year 3, you must have previously purchased ESU licenses for Year 1 and Year 2.

1. Purchase ESU Licenses
   ESU licenses can be purchased through CDW -G on IBuyNU. Ensure that you have proof of purchase for all three years (Year 1, Year 2, and Year 3).
2. Submit a TDX Ticket
   After completing your purchase:
   • Open a TDX ticket.
   • Assign the ticket to NUIT-CI-PS-Infrastructure.
   • Attach proof of purchase to the ticket.
3. Receive and Install Your ESU Key
   Once your request is processed, the Infrastructure team will provide you with a product key. You will use this key to activate ESU on your server using the installation commands provided below.
4. To activate server run the following command in an elevated command prompt: 

        5. to verify it is applied run the following command: 

for Microsoft reference: 

https://techcommunity.microsoft.com/t5/windows-it-pro-blog/windows-server-2012-r2-extended-security-updates/ba-p/3976610