$ALLUSERSDIR$

$ALLUSERSDIR$ is assigned the Common Programs (WinNT) or Programs (Winx) subdirectory of the All Users directory. The All Users directory is given by the following registry key:

Registry key
Description
WinNT
Common Programs entry in HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer
\Shell Folders
Win9x
Programs entry in HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer
\Shell Folders