Just install it one time through the installer entering your password and then back up the "License.dat" file inside the installation Folder ("%ProgramFiles%\EndNote 8 or 9") After you have your Licence file you can manually copy it to the installation folder or save it on the same folder as the installer and updates and execute this: Example for EndNote X3 ENX3Inst.exe /passive /norestart ENX3Inst.exe /update ENX301Patch.msp XCOPY "Licence.dat" "%ProgramFiles%\EndNote X3" /R /H /Y