Windows Update Service Registration Missing Or Corrupt

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  1. Windows Update Problem Service Registration Is Missing Or Corrupt

Final Method: Re-Install Windows to Fix Service registration is missing or corrupt Do a fresh windows installation. As nowadays, The main victims are windows 10 users, I should suggest them to download an fresh ISO file and do fresh windows 10 installation. When it comes to what the system registration is missing or corrupt is on Windows 10, you just need to know that the system registration is closely related to Windows 10 update or Windows Store app updates on your PC. Service Registration is Missing or Corrupt is a very common error faced by the Windows users. Here are 8 Way to Fix this error in Windows 10, 8, 7, XP.

Windows update service registration is missing or corrupt not fixed

Windows Update Problem Service Registration Is Missing Or Corrupt

Hi folks...
My windows 10 laptop (64 bit) stopped updating it self around 4/5/17. I noticed that Windows Defender would not update. I tried to update it using Windows defender but that did not work. And when I clicked on Settings, Update and Security, and then Update, windows said it had no updates for me.
I found a Windows update Fix it utility on Microsoft's web site. It is called 'Troubleshooting Pack Cabinet'. When I run it, it finds many things wrong. Then it says it has fixed everything. It displays a long list of things it found wrong, and next to each is a green check mark as if to say 'I fixed it!'. Then I run it again, and it says:
'Service registration is missing or corrupt'. And it has a big red X.
I found out how to manual down load the update to Windows Defender. When I did that, I was able to manually update it. And after the manual update, Windows defender can now update it self.
But when I go to Update and Security, and then Update, it check and says no update are available. When I click on 'Update History' it says the last update that was made to my software was on April 5th.
Any thoughts on fixing this 'Service registration is missing or corrupt' issue?
I have run Windows Defender (in full mode not quick) and I installed and ran Malwarebytes and ran that. So bad things detected.
Any help appreciated.
mraroid