Let's say there was before in logon batch
%SystemRoot%\System32\net.exe use Z: \\OldServer\OldShare
and the users created shortcuts to files / directories on this share on their desktop or in a subdirectory of the desktop.
A shortcut file contains always both – the path to the file with drive letter as well as the UNC path with server and share names.
A simple batch file to find in the desktop directory and all its subdirectories *.lnk files containing \\OldServer\OldShare
and delete all found shortcut files is:
@echo off
for /F "delims=" %%I in ('%SystemRoot%\System32\findstr.exe /I /M /S "\\\\OldServer\\OldShare" "%USERPROFILE%\Desktop\*.lnk" 2^>nul') do (
echo Deleting shortcut file "%%I"
del "%%I"
)
For details about /I /M /S
run in a command prompt window findstr /?
As it can be seen each backslash in the find string must be escaped with one more backslash.
It is also possible to search for "Z:\\"
instead of "\\\\OldServer\\OldShare"
But be careful with deletion of a *.lnk file just based on drive letter because users could have mapped a different share to this drive letter. Those users would not be happy if their shortcuts are deleted, too.
The batch file could ask the user for confirmation before deleting every found shortcut containing the drive letter of not anymore existing drive:
@echo off
setlocal EnableExtensions DisableDelayedExpansion
cls
echo Searching for shortcuts to drive Z: ...
for /F "delims=" %%I in ('%SystemRoot%\System32\findstr.exe /I /M /S "Z:\\" "%USERPROFILE%\Desktop\*.lnk" 2^>nul') do (
echo/
echo Shortcut "%%~nI" might be not valid anymore.
echo/
setlocal EnableDelayedExpansion
set Confirm=
set /P "Confirm=Delete the shortcut (y/n)? "
if /I "!Confirm!" == "y" (endlocal & del /F "%%I") else endlocal
)
endlocal
It is no problem if a network drive mapping using a command like
%SystemRoot%\System32\net.exe use Z: \\MyServer\MyShare
is done in logon batch file on every logon. An error message is output by net use
if drive letter Z: is used already, for example if the network drive mapping was done persistent and the user started the computer first without a network connection, then plugged-in the network cable and next after a few seconds entered user name and password to logon to Windows and on domain server of the company.
It is possible to use
%SystemRoot%\System32\net.exe use Z: /delete 2>nul
%SystemRoot%\System32\net.exe use Z: \\MyServer\MyShare
to first delete an already existing network drive mapping before mapping the share to drive letter Z:. I do not recommend to use wildcard *
instead of Z:
as that would delete also all network drive mappings created by the user.
For computers not only used in the company network, it is often better to make the drive mapping not persistent by using
%SystemRoot%\System32\net.exe use /persistent:no
%SystemRoot%\System32\net.exe use Z: \\MyServer\MyShare
%SystemRoot%\System32\net.exe use /persistent:yes
Windows does not save in this case in Windows registry under key HKEY_CURRENT_USER\Network
that \\MyServer\MyShare
should be mapped to Z:
and therefore the network drive mapping exists only for current user session. The network drive mapping is removed automatically once Windows is restarted or the user logs off.