Server 2022 KMS host key bug; Can't activate Win10 Enterprise LTSB/LTSC

Error code 0xC004F074 indicates that Key Management Service [1] could not be contacted during the activation procedure.

Ensure the Windows 10 LTSC client has proper cummilative updated.

Hardcode the software protection KMS registry on the client devices to KeyManagementServiceName to refer the KMS Hostname

Registry subkey: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SoftwareProtectionPlatform

use slmgr /skms KMSservername
slmgr /ato

if problem repeats use VLMSC management on KMS server and locate the device search and activate forcibly else redeploy the client device with proper updates.

By theory when you host VLMSC on 2022 OS then following clients will be supported.

https://docs.microsoft.com/en-us/windows-server/get-started/kms-activation-planning

CSVLK group CSVLK can be hosted on Windows editions activated by this KMS host
Volume License for Windows Server 2022
Windows Server 2022
Windows Server 2019
Windows Server 2016
Windows Server 2022 (all editions)
Windows Server Semi-Annual Channel
Windows Server 2019 (all editions)
Windows Server 2016 (all editions)
Windows 10 Enterprise LTSC 2019
Windows 10 Enterprise LTSC N 2019
Windows 10 LTSB (2015 and 2016)
Windows 10 Professional
Windows 10 Enterprise
Windows 10 Pro for Workstations
Windows 10 Education
Windows Server 2012 R2 (all editions)
Windows 8.1 Professional
Windows 8.1 Enterprise
Windows Server 2012 (all editions)
Windows Server 2008 R2 (all editions)
Windows Server 2008 (all editions)
Windows 7 Professional
Windows 7 Enterprise