I have 15 PCs with Windows 10, cloned from an Image.
Because I know, that all Clients must have a different SusClientId I used the WSUS ClientManager after cloning. But only one Client showed up in WSUS because they all had the same SusClientId.
Changing the SusClientId with WSUS ClientManager had no effect.
The following script worked:
reg delete HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate /v SusClientId /f
@echo Triggering detection after resetting WSUS client identity
net stop wuauserv
net start wuauserv
wuauclt /resetauthorization /detectnow