Instructions For Activate The Windows Server 2016 / 2019 / 2022 by Phone :
1) Please open CMD as administrator and type this:
slmgr.vbs /ipk KEY
Please replace “KEY” with your product key.
2) Then press the windows key and “R” together and type “slui 4” hit enter.
3) Then you will see Installation ID which is 63-digit numbers, now you can submit your Installation ID from our Get Confirmation ID page:
(Or you can call one of the numbers that are provided so you can get your Confirmation ID after submitting your Installation ID)
4) After receiving your Confirmation ID, you can enter your Confirmation ID, and your product will be activated.
If you need Windows Server product keys you can purchase from HERE with best price!