"'ve solved the problem of failed kb4284835 install like this:
In Windows add-ons (in the following steps):
- Uncheck .Net FrameWork 4.7 / Press OK
- Uncheck .Net FrameWork 3.5 / Press OK
- Recheck .Net FrameWork 3.5 / Press OK
- Recheck .Net FrameWork 4.7 / Press OK
And then the Magic trick in an administrative Command Prompt window:
SFC /scannow
I was really thinking that SFC was more a less a deprecated feature. But it is not. It has corrected several minor problems and allowed KB4284835 to install properly without any more glitch."
--
robyboy