This is not a scripting issue. You are asking to permanently bypass system security. Contact the vendor of the application for a fix or guidance. and post questions in the correct forum. AS of Windows Vista vendors and developers
were notified that they should not create folders at the root of system drive. Ongoing Windows management and security moves and changes will likely conflict with any changes you make.
This kind of question belongs in the "Deployment" forum.
User folders should always be created in the users profile (Documents or AppData). The prompt allows you to move the folder location when it is created.
For many applications the choice of root is due to a lack of a user home folder setting. Be sure the home folder is set correctly via Group Policy. For all other issues check with the vendor.
\_(ツ)_/