Upgraded to Windows 10 Pro yesterday (The first official public release) from Windows 8.1 Pro.
After upgrading I was having some issues with Outlook not sending e-mail. During the investigation I noticed that I am no longer listed as "Administrator" in the user account settings and that I cannot change that. I was Administrator when it was Windows 8.1.
To troubleshoot I have enabled the "Administrator" account and logged into that. I have other issues there though. Like many people the Start button, Cortana and basically the whole task bar does not work except for right click on an empty space (Right Click on Start button or Cortana areas does not work). I figured I would deal with this later and went into the User Accounts control panel to elevate myself to Administrator but It is still greyed out and will not allow me to.
I think if I could "Right Click" on either "control panel" or "User Accounts" and "Run As Administrator" that I might be able to fix it but there is no "Run As Administrator" option for those programs.
Any help much appreciated. I know there is not a lot of Windows 10 questions from official final release but hopefully someone will have a clue as to how to fix this.