Feature update error

FrankS · 14 Jun 2019

Oh, I forgot to mention, I tried with a clean boot as well - to no avail.
Yes I do use Macrium Reflect.
At present Windows is working just fine - so maybe later...
Thanks

Bree · 14 Jun 2019

FrankS said:

I ran an in-place upgrade - it failed at 55%.

Was that with the 1903 ISO? If you want to try an in-place repair upgrade using the 1809 ISO (the October 2018 Update) then you can get one direct from Microsoft with Option Three in this tutorial.

Download Windows 10 ISO File

dalchina · 14 Jun 2019

I asked that question in my last post, thinking FrankS may have used 1903.. but no comment.

FrankS · 14 Jun 2019

Yes, you're correct, I used the 1903. I'll try the 1803 later.

copycat10 · 19 Nov 2019

Hello,
I also have the error 0xc1420121 when i try to install the Feature update to windows 10 (business editions) version 1809 or 1909.
It has been approved on the wsus.

Thank you very much for your help

copycat10 · 23 Nov 2019

So i found out that was an old macrium image path that use Wimmount wich is needed by Windows Updates
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\WIMMount