The following procedure can only be performed by your computer's administrator.

The administrator must install and unlock Live.

Copy the folder and contents of

/User/Library/Application Support/Ableton/[Live X]/Unlock

to

/Library/Application Support/Ableton/[Live X]

where the X in "[Live X]" is your Live version number.

Change Access rights of the folder "/Library/Application Support/Ableton" and all contained files for Group to "Read."

Note: You must repeat this procedure every time you update Live.