I'm running W10 v1803 (upgraded from Windows 7) on a 5 year old Toshiba laptop and I keep getting reminders that this version will not be supported after November. But when I've tried to update (used both the Troubleshooter and Update Assistant), after a lengthy process I get the message "Windows could not install one or more system components. To install Windows, restart the computer, and then restart the installation". Of course, that does nothing but repeat the error message. I am not a skilled user but would appreciate any suggestions that might make this work.
If Regedit32 method fails, try this.
1.)
Dism /Online /Cleanup-Image /ScanHealth
DISM.exe /Online /Cleanup-image /Restorehealth
Dism /Online /Cleanup-Image /CheckHealth
sfc /scannow
you you still can not full update/upgrade then add the following:
a) From Start screen, type cmd. From the results, right-click on Command Prompt and choose Run as an Administrator.
net stop wuauserv and press enter.
rename c:\windows\SoftwareDistribution softwaredistribution.old and press enter.
rmdir /s /q c:\windows\SoftwareDistribution.old and press enter.
net start wuauserv and press enter.
reboot and retry. MS has a "I hate to many trys" and this rmdir /s /q c:\windows\SoftwareDistribution.old and press enter.
usually fixes.