Windows 10: failed attempt to update to 10 v.2004

I was trying to install new windows update but was unsuccessful. From event log i see:

Installation Failure: Windows failed to install the following update with error 0xC1900101: Feature update to Windows 10, version 2004.


I already tried to twice to make the update same results. i run the troubleshooter and got some error but there weren't all fixed:

report

:)

 

Windows 10 Updates fails to install even after multiple attempts.

Checking for updates after following the steps, Will inform on the progress of the update process and whether this solves it or nope. Thank you for the suggestion.

[Update]
The Trick didn't work.





The Security Update for Windows 10 for x64-based Systems (KB3074681) which was available, failed to install. And the same story again..

 

Windows 10 fails to update


When you finish testing the Avast suggestion, make sure that you restart your machine.

Then if the issue persists, please return to the trouble shooting list in post# 89

I think there are three steps that remain; the WU troubleshooter, reset WU components, and manual WU reset.

 

Windows 10 fails to update


Thanks,

The Users list compared to the Profile list you posted earlier tell me there is not an issue with Users (a known issue where there is a profile in the list, but not actual User folder).

The error code suggests corruption in the CBS manifest:
Try these steps one at time until the issue is resolved or you run out of steps.

Is Windows activated?
No? Activate Windows 10

Launch Command Prompt (Admin)
enter the following line
reg query HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate /s
If DisableWindowsUpdateAccess REG_DWORD 0x1

launch regedit
navigate to HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\WindowsUpdate
change the value of DisableWindowsUpdateAccess to 0
exit regedit
exit Command Prompt

Launch Windows Update

Try the next suggestion if the issue is not resolved.

Restore health to the component store
DISM - Repair Windows 10 Image
Step 6. To Use DISM /RestoreHealth /Source:wim Command
- OR -
Step 7. To Use DISM /RestoreHealth /Source:esd Command
Check System Files
SFC Command - Run in Windows 10
Read the front material, then
follow >> OPTION THREE <<
To Run SFC /SCANNOW Command in Windows 10

If there are integrity issues reported on screen,
Follow the instructions in >> OPTION FIVE <<
To View Only the "SFC" Scan Results from the CBS.LOG

If there are no integrity errors, Launch Windows Update

Try the next suggestion if the issue is not resolved.

Paste the following line into the address bar of File Explorer
Control Panel\All Control Panel Items\TroubleshootingLaunch System and Security > Fix problems with Windows Update
Press Advanced
Select Run as administrator
Press Next

Launch Windows Update

Try the next suggestion if the issue is not resolved.

Automatically reset Windows Update components
Download and run MS Windows Update diagnostic cab (direct download)

Launch Windows Update

Try the next suggestion if the issue is not resolved.

Manually reset Windows Updates via batch file

Windows Update - Reset in Windows 10

Launch Windows Update