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SFC /Scannow Failures

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Boggin:
It should have done.

Hang on while I perform a sfc /scannow and then apply that cmd.

geometer:
I am here!

Boggin:
Well it worked for me.

Can you copy & paste that cmd again and ensure you highlight all of it before clicking on Copy.

A thought has occurred to me in that the MCT you downloaded could be for version 1903.

Attempting a repair install with that would upgrade you to 1903 and will take considerably longer than a repair install.

I'm in the process of manually updating my other Win 10 machine and it's been running for about 6hrs now and still only on the third phase of working on updates at 48%.

I created a system image first should things not work out, but 1903 is due for release on 11th June though Windows Update.

geometer:
Copy and pasted:  findstr /c:"[SR]" %windir%\Logs\CBS\CBS.log > %userprofile%\Desktop\sfcdetails.txt

Still does not work.  Hitting Enter reverts to:  c:\windows\system32

Yes, my Media Tool attempts to upgrade to 1903.  First, clicking on setup.exe in ESD USB rejected and told to remove USB.  Removed and attempted again.  In Microsoft style, waited to the very end to advise that upgrade failed due to "boot error."  Incidentally, repeated crashes of SFCFIX, according to comments via Google says software is problematic.

Boggin:
It's possible that using an USB can't be used to upgrade to 1903.

Well that cmd should definitely have put an icon onto your desktop.

I have a Win 10 1809 DVD I can send you if you PM me your address with which you will be able to perform a repair install but it would have been preferable to have seen what sfc /scannow was snagging.

You can also boot up with that DVD and navigate to the Install screen to select Repair your computer which will give you the advanced boot options to select Command Prompt.

There you can perform a sfc /scannow where the system files are checked against those on the DVD and hopefully repaired,  but a sfc /scannow can't do all files.

At the cmd prompt enter bcdedit |find "osdevice"

This will give you a partition letter which may not be C:

Using your partition letter instead of the X I have exampled, enter -

sfc /scannow /offbootdir=X:\ /offwindir=X:\Windows

For clarity, that is a Pipe symbol before find and is the uppercase of \

If that reports also that it can't repair some files then you can go ahead with the repair install which may or not resolve the sfc /scannow report as the repair install doesn't touch installed programs or personal stuff.

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