On the Microsoft forum I tried what was suggested in the post below:
"In my case the KB4053579 failed to install and the upgrade to 1709 failed then to.
I solved it by mounting a Windows 10 ISO file and running this command from a elevated CMD box (click on the Search icon next to the start button, type CMD, click right mouse button on the black CMD icon that appeared, select "Run as Administrator" and click on YES)
dism /online /add-package /packagepath:E:\sources\sxs\microsoft-windows-netfx3-ondemand-package.cab
(change the E: to the mounted ISO drive letter)
After that i could do a "Dism /Online /Cleanup-Image /RestoreHealth" from an elevated CMD
Next i ran Windows Update again, and KB4053579 installed without any problems and the upgrade to 1709 worked also.
(Use the Microsoft Media Creation Tool to download the Windows 10 ISO)"
I got the following message after executing the above:
An error occurred accessing the temporary folder C:\Users\Robert~1\AppData\Local\Temp\F43C7A1A-309C-4500-BE25-D44789F9E84. Ensure that the path to the temporary folder exists and that you have Read/Write permission on the folder.
The DISM log folder can be found at C:\Windows\Logs\DISM\dism.log
The problem is I don't have Read/Write permission on the folder - in fact the icon for the folder seems a lighter shade of yellow than the others.
Is there any way that anyone knows to change a folder from "Read Only" to Read/Write?
"Don't cry because it's over, smile because it happened."