[Batch] sFix - System file repair tool that works even when SFC fails.

UPDATED 2011-03-19

Here is my batch file rendition of a system file repair tool. I haven't really tested it much, so any feedback you can offer would be great.

sFix [filename] [architecture]

[filename]

the name of the file to repair (e.g. slmgr.vbs).​

[architecture]

the target architecture (e.g. x64).​

Note that most 64bit windows operating systems also contain 32bit files,
so the [architecture] you specify should refer to the architecture build
of the target file itself, not necessarily the primary architecture of the
operating system!

On a 64bit Windows operating system when running the 64bit CMD interpreter:

64bit system files can be accessed from the "System32" folder.
32bit system files can be accessed from the "SysWOW64" folder.​

On a 64bit Windows operating system when running the 32bit CMD interpreter:

64bit system files can be accessed from the "Sysnative" virtualization folder.
32bit system files can be accessed from the "System32" redirected folder.​

On a 32bit Windows operating system:

64bit system files cannot be used and are not present.
32bit system files can be accessed from the "System32" folder.​

USAGE EXAMPLES:

• sFix winver.exe x86
• sFix winver.exe x64

Code:

:: sfix 0.4 by anemeros
:: restores system files from their winsxs originals
:: params = [filename] [architecture]

:h
@echo off
setlocal enableextensions
if "%~1" equ "" (goto :help)
echo.%*|find "?">nul
if %ERRORLEVEL% equ 0 (goto :help)
set tgtpath=%SystemRoot%\System32
echo.%1|find /i "\syswow64">nul
if %ERRORLEVEL% equ 0 (set tgtpath=%SystemRoot%\SysWOW64)
set arch1=
echo.%2|find "64">nul
if %ERRORLEVEL% equ 0 (set arch1=x64)
echo.%2|find "32">nul
if %ERRORLEVEL% equ 0 (set arch1=x86)
echo.%2|find "86">nul
if %ERRORLEVEL% equ 0 (set arch1=x86)
if "%arch1%" equ "" (echo.Invalid target architecture specification.&exit /b 1)
if exist "%SystemRoot%\SysWOW64\cmd.exe" (set arch0=x64) else (set arch0=x86)
if "%arch0%" equ "x86" if "%arch1%" equ "x64" (echo.There are no 64bit system files on a 32bit windows operating system.&exit /b 1)
if "%arch0%" equ "x64" if "%arch1%" equ "x86" (set tgtpath=%SystemRoot%\SysWOW64)
set tgt=%tgtpath%\%~1
call :maketemps

:m
for /f "usebackq" %%n in (`dir /s /b "%SystemRoot%\winsxs\%~1"^|find /i "%arch1:~1%_microsoft"`) do set src=%%n
if "%src%" equ "" (echo. - No file was copied; the backup was not found.&exit /b 1)
for /f "tokens=4-5 delims=\_" %%a in ("%t%") do echo.source:  %%b (%%a)
echo.target:  %tgt%
echo.
echo.status:
echo.
icacls "%tgt%" /save %ttacl%>nul
takeown /f "%tgt%">nul
icacls "%tgt%" /grant *s-1-1-0:f>nul
move /y "%tgt%" %trash%>nul
copy /y "%src%" "%tgt%">nul
if %ERRORLEVEL% neq 0 (
icacls "%tgtpath%" /restore %ttacl%>nul
echo. - The target file was not successfully repaired with its backup counterpart.
move /y %trash% "%tgt%">nul||(echo. - A self-heal transfer error has occurred.&echo. - Please move %trash% to "%tgt%" manually.)
exit /b 1
)
icacls "%tgtpath%" /restore %ttacl%>nul
echo. - Target file was replaced successfully.
if %ERRORLEVEL% neq 0 (echo. - Original file ACLs were not successfully restored.&exit /b 2) else (echo. - Original file ACLs were applied successfully.)
exit /b 0

:t
set tmpfile="%TEMP%\f%RANDOM%%RANDOM%.%~1"
if exist %tmpfile% (goto :t) else (goto :eof)

:maketemps
call :t acl
set ttacl=%tmpfile%
call :t tmp
set trash=%tmpfile%
goto :eof

:help
echo.sFix 0.4 [by anemeros]
echo.  restores system files from their windows original backups
echo.
echo.sFix [filename] [architecture]
echo.
echo.  [filename]        the name of the file to repair (e.g. slmgr.vbs).
echo.  [architecture]    the target architecture (e.g. x64).
echo.
echo.Note that most 64bit windows operating systems also contain 32bit files,
echo.so the [architecture] you specify should refer to the architecture build
echo.of the target file itself, not necessarily the primary architecture of the
echo.operating system!
echo.
echo.On a 64bit Windows operating system when running the 64bit CMD interpreter:
echo.  64bit system files can be accessed from the "System32" folder.
echo.  32bit system files can be accessed from the "SysWOW64" folder.
echo.
echo.On a 64bit Windows operating system when running the 32bit CMD interpreter:
echo.  64bit system files can be accessed from the "Sysnative" virtualization folder.
echo.  32bit system files can be accessed from the "System32" redirected folder.
echo.
echo.On a 32bit Windows operating system:
echo.  64bit system files cannot be used and are not present.
echo.  32bit system files can be accessed from the "System32" folder.
goto :eof

 

Thanks for noticing that Josh. I think I've fixed it in 0.4, which I've posted above. Let me know if you have any trouble with it.

 

Do you use sFix in MBR Regenerator, Josh?