Estoy usando Windows 8.1 x64, compilación 6.3.9600.16384, usando el símbolo del sistema con privilegios de administrador.

sfc /scannow

devoluciones:

...found corrupt files but was unable to fix some of them.

y

dism /online /cleanup-image /restorehealth

devoluciones:

Error: 0x800f0906
The source files could not be downloaded.

(y Windows Update Service no puede iniciarse porque faltan esos archivos).

también intentado

dism /online /cleanup-image /restorehealth /source:wim:F:\sources\install.wim:1 /limitaccess

y volvió:

Version: 6.3.9600.16384
Image Version: 6.3.9600.16384
Error: 0x800f081f
The source files could not be found.

Monté la imagen e intenté desde allí.

dism /mount-image /imagefile:F:\sources\install.wim /index:1 /mountdir:C:\offline

dism /online /cleanup-image /restoreHealth /source:c:\offline /limitaccess

también volviendo:

Error: 0x800f081f

¿Cómo reparo los archivos corruptos del sistema?

¿Puedo decirle a DISM que use el disco de instalación de Windows como fuente?

Filtrando los detalles

La ejecución de sfc /scannowproducirá un CBS.logarchivo de informe (que generalmente se encuentra en C:\Windows\Logs\CBS) que contiene una gran cantidad de información. Para obtener los bits jugosos, abra un símbolo del sistema y ejecute este comando:

findstr /i /c:"[SR]" "%windir%\Logs\CBS\CBS.log" | findstr /i /v /c:"verify" > "%userprofile%\Desktop\sfc.txt"

El comando anterior:

1. Obtenga todas las líneas en el archivo original que contiene [SR], que son las que rastrean los intentos de reparación.

2. Elimine todas las líneas que contienen verifyde lo que obtuvimos en el paso anterior para reducir aún más el desorden.

3. Escriba los resultados en el sfc.txtarchivo para su posterior análisis.

En este caso, este sería el archivo resultante:

2014-02-19 17:08:47, Info                  CSI    0000008b [SR] Cannot repair member file [l:22{11}]"Generic.xbf" of Microsoft-Windows-Camera-LockScreenCamera-Main, Version = 6.3.9600.16485, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file is missing
2014-02-19 17:08:49, Info                  CSI    0000008c [SR] Cannot repair member file [l:22{11}]"Generic.xbf" of Microsoft-Windows-Camera-LockScreenCamera-Main, Version = 6.3.9600.16485, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file is missing
2014-02-19 17:08:49, Info                  CSI    0000008d [SR] This component was referenced by [l:154{77}]"Package_1_for_KB2914218~31bf3856ad364e35~amd64~~6.3.1.3.2914218-1_neutral_GDR"
2014-02-19 17:08:51, Info                  CSI    00000091 [SR] Cannot repair member file [l:22{11}]"Generic.xbf" of Microsoft-Windows-Camera-LockScreenCamera-MediaShared, Version = 6.3.9600.16485, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file is missing
2014-02-19 17:08:53, Info                  CSI    00000092 [SR] Cannot repair member file [l:22{11}]"Generic.xbf" of Microsoft-Windows-Camera-LockScreenCamera-MediaShared, Version = 6.3.9600.16485, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file is missing
2014-02-19 17:08:53, Info                  CSI    00000093 [SR] This component was referenced by [l:154{77}]"Package_1_for_KB2914218~31bf3856ad364e35~amd64~~6.3.1.3.2914218-1_neutral_GDR"
2014-02-19 17:08:56, Info                  CSI    00000097 [SR] Cannot repair member file [l:22{11}]"Generic.xbf" of Microsoft-Windows-Camera-MediaViewerDistributed-MediaShared, Version = 6.3.9600.16485, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file is missing
2014-02-19 17:08:57, Info                  CSI    00000098 [SR] Cannot repair member file [l:22{11}]"Generic.xbf" of Microsoft-Windows-Camera-MediaViewerDistributed-MediaShared, Version = 6.3.9600.16485, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file is missing
2014-02-19 17:08:57, Info                  CSI    00000099 [SR] This component was referenced by [l:154{77}]"Package_1_for_KB2914218~31bf3856ad364e35~amd64~~6.3.1.3.2914218-1_neutral_GDR"
2014-02-19 17:23:00, Info                  CSI    00000975 [SR] Repairing 3 components
2014-02-19 17:23:00, Info                  CSI    00000977 [SR] Cannot repair member file [l:22{11}]"Generic.xbf" of Microsoft-Windows-Camera-LockScreenCamera-Main, Version = 6.3.9600.16485, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file is missing
2014-02-19 17:23:00, Info                  CSI    00000978 [SR] Cannot repair member file [l:22{11}]"Generic.xbf" of Microsoft-Windows-Camera-LockScreenCamera-MediaShared, Version = 6.3.9600.16485, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file is missing
2014-02-19 17:23:00, Info                  CSI    00000979 [SR] Cannot repair member file [l:22{11}]"Generic.xbf" of Microsoft-Windows-Camera-MediaViewerDistributed-MediaShared, Version = 6.3.9600.16485, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file is missing
2014-02-19 17:23:00, Info                  CSI    0000097a [SR] Cannot repair member file [l:22{11}]"Generic.xbf" of Microsoft-Windows-Camera-LockScreenCamera-MediaShared, Version = 6.3.9600.16485, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file is missing
2014-02-19 17:23:00, Info                  CSI    0000097b [SR] This component was referenced by [l:154{77}]"Package_1_for_KB2914218~31bf3856ad364e35~amd64~~6.3.1.3.2914218-1_neutral_GDR"
2014-02-19 17:23:00, Info                  CSI    0000097c [SR] Cannot repair member file [l:22{11}]"Generic.xbf" of Microsoft-Windows-Camera-LockScreenCamera-Main, Version = 6.3.9600.16485, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file is missing
2014-02-19 17:23:00, Info                  CSI    0000097d [SR] This component was referenced by [l:154{77}]"Package_1_for_KB2914218~31bf3856ad364e35~amd64~~6.3.1.3.2914218-1_neutral_GDR"
2014-02-19 17:23:00, Info                  CSI    0000097e [SR] Cannot repair member file [l:22{11}]"Generic.xbf" of Microsoft-Windows-Camera-MediaViewerDistributed-MediaShared, Version = 6.3.9600.16485, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file is missing
2014-02-19 17:23:00, Info                  CSI    0000097f [SR] This component was referenced by [l:154{77}]"Package_1_for_KB2914218~31bf3856ad364e35~amd64~~6.3.1.3.2914218-1_neutral_GDR"
2014-02-19 17:23:00, Info                  CSI    00000980 [SR] Repair complete
2014-02-19 17:23:00, Info                  CSI    00000981 [SR] Committing transaction

Identificando los problemas

Al verificar el archivo, puede ver que el Comprobador de archivos del sistema intentó reparar 3 componentes, pero falló:

2014-02-19 17:23:00, Info                  CSI    00000975 [SR] Repairing 3 components
2014-02-19 17:23:00, Info                  CSI    00000977 [SR] Cannot repair member file [l:22{11}]"Generic.xbf" of Microsoft-Windows-Camera-LockScreenCamera-Main, Version = 6.3.9600.16485, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file is missing
2014-02-19 17:23:00, Info                  CSI    00000978 [SR] Cannot repair member file [l:22{11}]"Generic.xbf" of Microsoft-Windows-Camera-LockScreenCamera-MediaShared, Version = 6.3.9600.16485, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file is missing
2014-02-19 17:23:00, Info                  CSI    00000979 [SR] Cannot repair member file [l:22{11}]"Generic.xbf" of Microsoft-Windows-Camera-MediaViewerDistributed-MediaShared, Version = 6.3.9600.16485, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral in the store, file is missing

Cada entrada sigue este esquema aproximado:

• Cannot repair member file [...]"Generic.xbf"
  El archivo que necesita ser reparado.

• of Microsoft-Windows-Camera-LockScreenCamera-Main,
  El nombre del paquete al que pertenece el archivo.

• Version = 6.3.9600.16485,
  Versión del archivo (mayor, menor, compilación y revisión).

• pA = PROCESSOR_ARCHITECTURE_AMD64 (9),
  La arquitectura del procesador de destino .

• Culture neutral, [...],
  Neutral o el nombre de la cultura relacionada si está localizado.

• file is missing
  Motivo por el que el archivo debe repararse.

Hay tres Generic.xbfarchivos que faltan. Además, todos ellos comparten esta información:

2014-02-19 17:23:00, Info                  CSI    0000097b [SR] This component was referenced by [l:154{77}]"Package_1_for_KB2914218~31bf3856ad364e35~amd64~~6.3.1.3.2914218-1_neutral_GDR"

Esto significa que el archivo está incluido en la actualización de Windows KB2914218.

Reparación manual

1. Obtenga el paquete de actualización KB2914218 .

2. Extraiga el .msuarchivo descargado usando 7-Zip en una carpeta con el nombre del archivo original (por ejemplo Windows8.1-KB2914218-x64).

3. Abra un símbolo del sistema como administrador y navegue a la carpeta real utilizando el siguiente comando:

   cd /d "X:\Whatever\Windows8.1-KB2914218-x64"
   

4. Expanda el archivador que contiene los archivos de actualización en el directorio actual:

   expand Windows8.1-KB2914218-x64.cab -f:* %cd%
   

5. Cada paquete tiene un .manifestarchivo asociado que enumera los archivos agrupados. Para determinar dónde se almacena cada archivo, ejecute el siguiente comando reemplazando packagaNamey fileName.extcon los valores reales:

   for /f "delims=" %A in ('"findstr /i /m /c:"packageName" *.manifest"') do @for /f "delims=" %B in ('"findstr /i /m /c:"fileName.ext" %A"') do @echo %~nB;fileName.ext>>fixes.txt
   

   Por ejemplo:

   for /f "delims=" %A in ('"findstr /i /m /c:"Microsoft-Windows-Camera-LockScreenCamera-Main" *.manifest"') do @for /f "delims=" %B in ('"findstr /i /m /c:"Generic.xbf" %A"') do @echo %~nB;Generic.xbf>>fixes.txt
   

6. Repita el paso 5 para cualquier otro archivo que deba repararse.

7. Tome posesión y control total sobre la C:\Windows\winsxscarpeta:

   takeown /f "%windir%\winsxs" /a
   icacls "%windir%\winsxs" /grant:r *S-1-5-32-544:(OI)(CI)(F) /q
   

8. Crea cualquier carpeta faltante:

   for /f "tokens=1 delims=;" %G in (fixes.txt) do @if not exist "%windir%\winsxs\%~G\" @md "%windir%\winsxs\%~G"
   

9. Tome el control total de las carpetas requeridas:

   for /f "tokens=1 delims=;" %G in (fixes.txt) do takeown /f "%windir%\winsxs\%~G" /a >nul & icacls "%windir%\winsxs\%~G" /grant:r *S-1-5-32-544:(OI)(CI)(F) /q
   

10. Restaurar los archivos:

    for /f "tokens=1,2 delims=;" %A in (fixes.txt) do copy /y ".\%A\%B" "%windir%\winsxs\%A\%B"
    

11. Repita la revisión del archivo del sistema para asegurarse de que los problemas se hayan solucionado:

    sfc /scannow
    

Referencias

• Use la herramienta Comprobador de archivos del sistema para reparar archivos del sistema dañados o faltantes
• Cómo ejecutar el comando "SFC / SCANNOW" en el arranque o en Windows 8 y 8.1

Si Windows no puede arrancar, puede ejecutar SFC desde la consola de recuperación de Windows:

sfc /scannow /offbootdir=d:\ /offwindir=d:\windows

Extraído de: http://www.sysadmit.com/2016/03/windows-reparar-archivos-del-sistema.html