Error 1303 when installing new plugins for media player

Hello - I believe I have an administrator priviledge issue here, which I am logged in as admin via this tutorial http://www.vistax64.com/tutorials/67567-administrator-account.html
and have enabled full control through folder properties and security tabs, but still get this error while trying to install a new plugin

Error 1303: the installation has insufficient priviledges to access this directory C:\Program Files\Windows Media Player...

So if I am logged in as true admin, and have full control over this folder, what step am I missing?

Hi azulyn,
Sounds like you need to take full control over the Windows Media Player folder. Please try method 2 of this tutorial.
http://www.vistax64.com/tutorials/67717-take-ownership-file.html?ltr=T
Raj