Windows Update, Store, sfc, dism and other errors

[AMarszal]

Windows Update, Store, sfc, dism and other errors (no: 0x800705b4, 0x801901F7)

Hi
It's my first post here.
I came here cause I'm looking for help with couple of Windows 10 problems.

Couple of informations:
I'm on Dell XPS L702x laptop
I upgraded from win7 to win10 8 days ago. Till friday everything was working great. After that I started to have problems with windows store (products were not downloading), but did nothing with it till monday (i had crappy internet connection and i thought that it have to be it )
At monday (yesterday) i saw that i have problems with windows update (not searching for updates - error:0x800705b4), store did not start at all (was trying to but at the end it showed error no: 0x801901F7 ).
I decided use the ccleaner but did not help.
After that i started to look for answers in net and did couple of other things:

• I run sfc /scannow and it showed errors unable to repair automaticaly
• I run dism but it stoped at 40% (i waited 8 hours till terminating)
• I run WindowsUpdateDiagnostic and it showed errors: Service registration is missing or corrupt

And right now I have no idea what to do next.

At some part of a day yesterday the store was openning (not downloading but opening) and i was able to search for updates. But i really do not know why I was able to do it for some time and unable later.

Could you possibly help me and give any piece of advise.

 

[AMarszal]

I made couple of new discoveries:
1) calendar is not working since thursday (last date in calendar shown at the calendar icon)
2) mail app is not working
3) wsreset did nothing
4) i run checkdisc and it found couple of errors which was fixed and after that the store opened (still doesn't download products) and windows update check is doable again (i am able to check that there are no new updates) - as i wrote yesterday i had moments when it was like this also.

Thanks for any kind of help.

 

[zcomputerwiz]

SFC Scan

1. Swipe in from the right edge of the screen, and then tap Search.
   (If you're using a mouse, point to the upper-right corner of the screen, move the mouse pointer down, and then click Search.)
2. Type cmd in the search box, and then right-click or press and hold on Command Prompt.
3. Tap or click Run as administrator.
4. When command prompt opens, copy and paste the following commands into it, press enter after each
   
   sfc /scannow
   
   Wait for this to finish before you continue
   
   copy %windir%\logs\cbs\cbs.log %userprofile%\Desktop\cbs.txt
   
5. This will create a file, cbs.txt on your Desktop. Please attach this to your next post.