Service registration is missing or corrupt

I did a RESET, and that fixed it.  Drastic step because all the other "fixes" did not work.

After days of trial and error, this did the trick for me:

1. Open command prompt and type "NET STOP WUAUSERV". This will stop the spazzing Windows Update Service.
2. Follow up with typing "WUAUCLT /DETECTNOW". This will detect, download, and process all necessary updates behind the scenes. Depending on how many your system requires, this could take A LOT of time. I had 110 updates needed, so it took a while.

Is this a permanent fix? Probably not, but it should get you up to date on all critical updates released at the point in time these commands are run (hopefully).

I am on Windows 7

I received :

"WUAUCLT IS NOT A RECOGNIZED COMMAND"

From recently I can't update windows and I ran MS Fix it Center and it shows that service registration is missing or corrupt.

sorry non so parlare inglese il mio sistema è aggiornato a windows 10, ma gli stessi problemi li avevo anche con windows 8.1, poi ho scoperto che windows Update era arrestato e riavviato il servizio e controllato anche il servizio trasferimento intelligente backround (BITS) devono essere tutti e due avviati o gli aggiornamenti non si installano.

Best reply yet Joanne!

Six pages so far and still no solution. Pathetic support from Microsoft for a problem that seems to be affecting thousands of users.