A common user cannot and should not be able to copy something to %windir% during the legacy logon script.
The NTFS security for %windir% for "Users" is per default set to "Read & Execute".
Verify if the kix32.exe exists in %windir%.
Just copy your kix32.exe and/or wkix32.exe to
\\domain.ext\sysvol\domain.ext\scripts\
or
\\domain.ext\netlogon\
and use it from there
If you really want to copy kix32.exe or wkix32.exe to the %windir%, I think you should use a GPO Computer Startup Script.


Edited by Witto (2007-07-23 12:45 PM)
Edit Reason: Added reason why user cannot copy to %windir%