Updates don't install -service registration missing.

[alaln]

I checked for updates in update and security. shows updates waiting to install but can't get them to install automatically or manually.
I ran ( I think it was) MS Fixit which said "Service registration is missing or corrupt" and can't offer a solution.
I don't know how to repair or reload win10 as I don't have a system disk.
Any suggestions please!
I did make a backup usb stick before downloading win10. Would using this reinstall win 8.1?

 

[Trouble]

You may want to attempt an in-place upgrade / repair install. Upgrading Windows 10 by installing it over top of itself.
There is a pretty good article here https://neosmart.net/wiki/windows-10-repair-installation/ just ignore the first couple paragraphs where they are promoting their repair products and scroll down to the meat of the article.

If you do not have the installation media....
The installation media can be obtain through either of these two resources.
https://www.microsoft.com/en-us/software-download/techbench
OR
http://www.microsoft.com/en-us/software-download/windows10
Once you have the ISO, you can use ImgBurn to burn it to a DVD or Rufus to burn it to a USB ThumbDrive, or simply mount the ISO from within Windows 10 and run setup.exe from there.
Choose upgrade and make sure the box is ticked to obtain updates as part of the upgrade process.

This is a relatively simple and straight forward task and is generally non-destructive (all your data, programs, drivers, etc., should remain intact and unharmed), but.....
Personally I would still have a backup of my critical data, as well as a disk image, so I could recover in the event of some unforeseen problem.

 

[alaln]

Thanks for your response, I will have a look at the neosmart item later.

 

[Trouble]

OK, keep us posted as to how you progress and what you decide, and.....
Welcome to the forum.

 

[alaln]

OK, keep us posted as to how you progress and what you decide, and.....
Welcome to the forum.

 

[alaln]

Hi!
I couldn't try your suggested fix at the time as I was away, however, when I got back and checked my laptop some recent updates started to load, when completed and restarted all the remaining updates also downloaded. All now fully functioning - did one of the updates include a fix for the missing file, I wonder?
Anyway, thanks for your suggestions .

 

[Trouble]

Thanks for the update. Glad to hear that you've managed to resolve your issues.