Bonjour à toutes et tous

Tout d'abord tous mes voeux pour cette nouvelle année !!!
J'ai trouvé il y a quelques temps sur ce lien : http://www.howtogeek.com/129188/htg-...-locked-files/
Un petit script bien pratique nommé "MountLatestShadowCopy" qui permet de monter et exploiter les clichés instantanés VSS.

Code bat : Sélectionner tout - Visualiser dans une fenêtre à part
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@ECHO OFF
IF NOT "%~1" == "/?" GOTO Main
 
ECHO Mount Latest Shadow Copy [v1.0]
ECHO Locates the most recent Windows file shadow copy and mounts it to the
ECHO specified directory.
ECHO Copyright (c) 2012, Jason Faulkner - All rights reserved.
ECHO.
ECHO %~n0 MountToFolder [SearchDrive]
ECHO.
ECHO  MountToFolder  Folder location where the shadow copy contents will be made
ECHO                 available. This folder should NOT exist; it will be created
ECHO                 as a mount point and accessible after the operation completes.
ECHO                 Important Note: The target specified should end with 
ECHO                 a \ character to ensure it is properly read as a directory.
ECHO                 For example: C:\MyShadowCopy\
ECHO  SearchDrive    Specifies the local drive for which you want to mount the
ECHO                 latest shadow copy. Enter with a colon following the drive
ECHO                 letter. Default value is C:.
ECHO.
ECHO Note: This script MUST be run as Administrator (with highest privledges in a
ECHO       scheduled task) in order to work properly.
ECHO.
ECHO Requirements:
ECHO  Windows Vista or later with System Restore enabled.
ECHO.
ECHO __________
ECHO Visit my website for additional information, examples and updates.
ECHO <a href="http://jasonfaulkner.com" target="_blank">http://jasonfaulkner.com</a>
GOTO :EOF
 
 
:Main
SETLOCAL EnableExtensions
 
CALL :Initialize
CALL :Configuration %*
CALL :CheckRequirements
IF %ERRORLEVEL% GTR 0 GOTO Finish
CALL :PrepSettings 
IF %ERRORLEVEL% GTR 0 GOTO Finish
 
 
REM Pull the shadow copy listing.
VSSAdmin List Shadows %SearchDrive% > %TempFile%
 
SET ShadowPath=
REM Pull the latest shadow copy from the listing.
FOR /F "usebackq tokens=1,2* delims=:" %%A IN (`FINDSTR /I /C:"Shadow Copy Volume:" %TempFile%`) DO SET ShadowPath=%%B
 
IF NOT "%ShadowPath%" == "" (
	REM A shadow copy was found, mount it.
	MKLINK /D "%MountFolder%" %ShadowPath%\
) ELSE (
	ECHO No Shadow Copies found.
)
 
:Finish
IF EXIST %TempFile% DEL %TempFile%
ENDLOCAL
GOTO :EOF
 
 
:Initialize
SET MountFolder=
SET SearchDrive=C:
SET TempFile="%TEMP%\%~n0_%RANDOM%.txt"
GOTO :EOF
 
:Configuration
IF /I "%~1" == "" GOTO InvalidParams
SET MountFolder=%~dp1
IF NOT "%~2" == "" SET SearchDrive=%~2
GOTO :EOF
 
:PrepSettings
IF EXIST "%MountFolder%" (
	ECHO Mount Folder: %MountFolder%
	ECHO The specified folder already exists. Enter a new folder for the mount target.
	GOTO InvalidParams
)
IF NOT "%SearchDrive%" == "" SET SearchDrive=/FOR=%SearchDrive%
GOTO :EOF
 
 
:CheckRequirements
CALL :VerifyRequirement "vssadmin.exe"
GOTO :EOF
 
:VerifyRequirement
IF EXIST "%~1" GOTO :EOF
IF NOT "%~$PATH:1" == "" GOTO :EOF
ECHO Missing requirement: [%~1] Use /? to view the help information.
EXIT /B 2
 
:InvalidParams
ECHO Invalid parameters. Use /? to view the help information.
EXIT /B 1

Le script fonctionne parfaitement sur un environnement anglo-saxon mais pas sur un OS en français. Je l'ai donc modifié en remplaçant l'entrée "Shadow Copy Volume" par "Volume de cliché instantané"

Code bat : Sélectionner tout - Visualiser dans une fenêtre à part
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:Main
SETLOCAL EnableExtensions
 
CALL :Initialize
CALL :Configuration %*
CALL :CheckRequirements
IF %ERRORLEVEL% GTR 0 GOTO Finish
CALL :PrepSettings 
IF %ERRORLEVEL% GTR 0 GOTO Finish
 
 
REM Pull the shadow copy listing.
VSSAdmin List Shadows %SearchDrive% > %TempFile%
 
SET ShadowPath=
REM Pull the latest shadow copy from the listing.
FOR /F "usebackq tokens=1,2* delims=:" %%A IN (`FINDSTR /I /C:"Volume de cliché instantané :" %TempFile%`) DO SET ShadowPath=%%B
 
IF NOT "%ShadowPath%" == "" (
	REM A shadow copy was found, mount it.
	MKLINK /D "%MountFolder%" %ShadowPath%\
) ELSE (
	ECHO No Shadow Copies found.
)
 
:Finish
IF EXIST %TempFile% DEL %TempFile%
ENDLOCAL
GOTO :EOF
 
 
:Initialize
SET MountFolder=
SET SearchDrive=C:
SET TempFile="%TEMP%\%~n0_%RANDOM%.txt"
GOTO :EOF
 
:Configuration
IF /I "%~1" == "" GOTO InvalidParams
SET MountFolder=%~dp1
IF NOT "%~2" == "" SET SearchDrive=%~2
GOTO :EOF
 
:PrepSettings
IF EXIST "%MountFolder%" (
	ECHO Mount Folder: %MountFolder%
	ECHO The specified folder already exists. Enter a new folder for the mount target.
	GOTO InvalidParams
)
IF NOT "%SearchDrive%" == "" SET SearchDrive=/FOR=%SearchDrive%
GOTO :EOF
 
 
:CheckRequirements
CALL :VerifyRequirement "vssadmin.exe"
GOTO :EOF
 
:VerifyRequirement
IF EXIST "%~1" GOTO :EOF
IF NOT "%~$PATH:1" == "" GOTO :EOF
ECHO Missing requirement: [%~1] Use /? to view the help information.
EXIT /B 2

Mais rien n'y fait j'ai toujours l'erreur "No Shadows Copies found" alors que les clichés existent bel et bien... Et là je sèche

Est ce que quelqu'un a déjà été confronté à ce problème ?

Merci d'avance pour votre aide