WSUS doesn't report client status

Some times WSUS server will not report the status of client computers into the management screen. If the reset authorisation and reportnow commands don't work try the following:

• Open a command prompt
• Type in:

1. net stop wuauserv
2. REG DELETE "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate" /v SusClientId /f
3. net start wuauserv
4. wuauclt /resetauthorization /detectnow
5. wuauclt /reportnow 

And that's it. Clients should start reporting back after a refresh in the WSUS.