====== 0x8000FFFF ======
Windows Update error 0x8000FFFF

Additional symptoms:
    * ''sfc /scannow'' stuck at 7% and cannot complete (also from Safe Mode)
    * ''mmc.exe'' - app locked 
    * Able to run ''mmc.exe'' from Power Shell run as Administrator

It looks like strange Windows files corruption.

Try to fix:

    * ''bitsadmin.exe /reset /allusers''
    * ''chkdks /r''
    * ''ICACLS C:\Windows\winsxs''
    * [[https://toolslib.net/downloads/viewdownload/1-adwcleaner/|ADW Cleaner]]

    * [[https://docs.microsoft.com/pl-pl/windows/deployment/update/servicing-stack-updates|Servicing Stack Update]]
        * ''systeminfo'' - check Windows version
        * [[https://msrc.microsoft.com/update-guide/en-us/vulnerability/ADV990001|Latest SSU Updates]]
        * Install [[https://www.catalog.update.microsoft.com/Search.aspx?q=KB4586864|KB4586864]]

    * [[https://smartfix.pro/SmartFix.exe|Smart Fix]]
        * It installs Windows RE and integrate it into boot menu
        * Cannot works with QEMU SCSI Virtual Controller!

    * [[https://windowsreport.com/sfc-scannow-stops-windows-10/|Sfc /scannow stops on Windows 10 [BEST SOLUTIONS]]]
      * [[https://windowsreport.com/dism-failed-windows-10/|FIX: DISM failed on Windows 10]]

    * <code cmd>icacls C:\windows /reset /t /c /l</code>
    * [[https://www.instalki.pl/programy/download/Windows/narzedzia_systemowe/SFCFix.html|SFCFix]]

Anty malware tools:
    * [[https://www.dobreprogramy.pl/Farbar-Recovery-Scan-Tool,Program,Windows,46164.html|Farbar Recovery Scan Tool FRST]]
    * 


DISM:
<code cmd>
Dism.exe /online /cleanup-image /scanhealth
Error: 4448
Sterownik WOF napotkał uszkodzenie w tabeli zasobów skompresowanego pliku.
</code>

Found hints on Internet:
<code cmd>
Dism.exe /online /cleanup-image /restorehealth

REM or
REM use WIN10 installation CD-ROM as drive F:
REM First list all images inside instalaltion CD:
dism /Get-WimInfo /WimFile:F:\sources\install.wim
REM remember index of your installation, i.e. 6 for Win 10 Pro
dism /Online /Cleanup-Image /RestoreHealth /Source:WIM:F:\sources\install.wim:6 /LimitAccess

REM or
REM mount Windows folder from another healthy system as Y:
Dism.exe /Online /Cleanup-Image /RestoreHealth /Source:Y:\ /LimitAccess
</code>

doesn't help, the same error.

===== Solution ? =====

<code cmd>
Dism.exe /Online /Cleanup-Image /StartComponentCleanup
Dism.exe /Online /Cleanup-Image /AnalyzeComponentStore
sfc/scannow
Dism.exe /Online /Cleanup-Image /RestoreHealth
sfc/scannow
</code>


https://www.wintips.org/fix-dism-source-files-could-not-be-found-windows-10-8/


in CBS.log file:

<code>
2020-11-30 09:44:58, Info                  CSI    00000055 [SR] Beginning Verify and Repair transaction
2020-11-30 09:44:58, Error                 CSI    00000056@2020/11/30:08:44:58.755 (F) onecore\base\wcp\sil\ntsystem.cpp(3674): Error c000a2a7 [Error,Facility=(system),Code=41639 (0xa2a7)] originated in function Windows::Rtl::SystemImplementation::DirectFileSystemProvider::SysReadFile expression: (null)
[gle=0x80004005]
2020-11-30 09:44:58, Info                  CBS    Could not get active session for current session file logging [HRESULT = 0x80004003 - E_POINTER]
2020-11-30 09:44:58, Info                  CBS    Could not get file name for current session file logging [HRESULT = 0x80004003 - E_POINTER]
2020-11-30 09:44:58, Error                 CSI    00000057 (F) c000a2a7 [Error,Facility=(system),Code=41639 (0xa2a7)] #3957253# from Windows::Rtl::SystemImplementation::DirectFileSystemProvider::SysReadFile(h = 1950 ('\Device\HarddiskVolume2\Windows\WinSxS\amd64_microsoft-analog-h2-hydrogenrt_31bf3856ad364e35_10.0.19041.1_none_ab9a2ef35d700de3\Hydrogen.dll'), evt = 0, apcr = NULL, apcc = NULL, iosb = @0xecbe2fbe70, data = {l:0 b:}, byteoffset = 0, key = (null))
</code>