NEC Express5800 Series Installation Manual page 47

Chapter 1 Installing Windows
The server does not connect to the Internet:
Use telephone for license authentication.
Type the following command to get an Install ID for authentication, and then press <Enter> key.
C:\Users\administrator>slmgr -dti
Acquire the installation ID required for license activation.
Refer to the file %systemroot%\system32\sppui\phone.inf to confirm the telephone
number of Microsoft Licensing Center.
Call Microsoft Licensing Center and tell them your Install ID.
Type the confirmation ID you have received in the following command line, and then press <Enter>
key.
C:\Users\administrator>slmgr –atp <Confirmation ID>
The authentication is now complete.
Installation Guide (Windows Server 2022)
3. Installing Windows Server 2022
47