A while back I upgraded my Windows 7 PC by doing a clean install of Windows 10 1709. I recently noticed that on the OS drive that if I right click and go to New the only option available there is to create a folder. I found this applies to most areas on that OS partition save for my user profile folder. The only place my local admin account is able to change security permissions in these cases is at the root of the OS drive. I can manually add my user account there with full control and then the right click, new menu displays all the other options available, however attempting to make the changes recursive on the drive fails with many access errors. If I right click on C:\Program Files\ or any other folder and pull up security permissions all the options to add or remove permissions are grayed out. I tried logging in with the default administrator account and same thing. I thought maybe I got a virus or maybe made a change from all my customizing since installing the OS since it was a few days before I noticed this specific issue. During this time I did however notice being prompted to grant admin rights for most operations I was doing on the OS drive even though UAC is disabled. Then today I installed Windows 10 Pro 1709 on my wife's laptop from scratch and this is the first thing I checked and it's the same situation. So what is the deal why do I not have full admin rights on my OS partition in Windows 10? If I'm a full admin I should be able to do whatever I want with whatever file/folder I want shouldn't I?