This is a collection of Windows tricks that I encountered and wanted to archive here.
From http://www.tomshardware.co.uk/forum/76656-45-users-access-installed-programs
If your game or application works with admin accounts, but not with limited accounts, you can fix it to allow limited users to access the program files folder with “change” capability rather than “read” which is the default.
C:\>cacls "Program Files\appfolder" /e /t /p users:c
where “appfolder” is the folder where the application is installed.
If you wish to undo these changes, then run
C:\>cacls "Program Files\appfolder" /e /t /p users:r
See reference here: About PowerShell Execution Policies
Set-ExecutionPolicy RemoteSigned -Scope Process Set-ExecutionPolicy Undefined -Scope Process