Windows 10: Administrator denied access to files

I'm having issues with installing iTunes. The previous iTunes libraries will not open as it says I don't have permissions. I've tried to change permissions and I have to have authority to do that. How do I fix this?

Debbie

:)

 

net user administrator /active:no keeps saying access denied.

Hi Rebekah,

It's possible that you're not using an elevated command prompt, causing the Access Denied error. We suggest following these steps to properly disable the built-in administrator account:

• Right-click the Start button.
• Choose Command Prompt (Admin).
• Copy and paste net user Administrator /active:no and press
  Enter. If the command isn't successful, please post a screenshot so that we can study it further.

Let us know if you're able to hide the administrator account after following these steps.

 

net user administrator /active:no keeps saying access denied.

Can't send screen shot. Entering Command prompt(admin) get "Do you want this app..." box with NO as the only choice. I have tried everything I've found on the net to enable the built in administrative account to no avail. Running Win10 OS build: 16299.125.
HELP!

 

Denied access to a file despite being listed as the owner

I tried to reinstall Origin, and this particular program, and it seems some others on the computer do not allow access at all, either to run or delete. It says access is denied or that permission will be needed. I go into the advanced settings to change
the owner (as elswhere the troubleshooters suggested) and I see that Administrators is already listed as the owner. It's as though the administrator does not even have access to the file. This appears to apply to the entire folder. How can I change the
permission to the file(s) so I can delete/reinstall?