Create the Batch file with following code and run to fix the problem
net stop wuauserv
regsvr32 /s wuapi.dll
regsvr32 /s wups.dll
regsvr32 /s wuaueng.dll
regsvr32 /s wucltui.dll
regsvr32 /s msxml3.dll
c:
cd %windir%SoftwareDistribution
rd /s/q DataStore
mkdir DataStore
rd /s/q Download
mkdir Download
net start wuauserv
rem Fixes problem with client machines not showing up on the server due to imaging method
reg delete HKLMSOFTWAREMicrosoftWindowsCurrentVersionWindowsUpdate /v AccountDomainSid /f
reg delete HKLMSOFTWAREMicrosoftWindowsCurrentVersionWindowsUpdate /v PingID /f
reg delete HKLMSOFTWAREMicrosoftWindowsCurrentVersionWindowsUpdate /v SusClientId /f
cls
@echo Triggering detection after resetting WSUS client identity
net stop “Automatic Updates”
net start “Automatic Updates”
wuauclt /resetauthorization /detectnow