Chanderjeet Rai

File and registry virtualization helps standard users who have restricted
access to the registry and file system write to these protected areas by
creating a ‘per-user’ copy and redirecting subsequent data operations. This
means that if a regular user, or non-elevated administrator runs a program,
and that program tries to write to a folder under Program Files, those writes
are redirected to a folder to which the user has permissions to write.