always run programs as administrator in Windows 10

The title is a bit misleading, but I cannot think of a better one. See the following example to explain what I want:

• Under Windows 7, the current User I am using is a "Computer Administrator" account. After updating to Windows 10, the account type of my current User is still "Administrator".
• Let's say I want to edit the C:WindowsSystem32driversetchosts file.
• Typically I just use the Windows Explorer, navigate to that path and then right click on the hosts file and choose, in my case Edit with Sublime Text 2 - since I have Sublime Text 2 installed and I prefer to use that for editing any text file.
• This works fine under Windows XP and Windows 7 (with UAC disabled). However, after updating to Windows 10 (also with UAC disabled), the Sublime Text process will not have enough rights to save that file.

So my question is: what is the difference here between Windows 7 and Windows 10? Why is a process, that is not run under the Administrator account under Windows 7 able to write to that location, but under Windows 10 it is not? Even though the account used in both cases is of type "Administrator?"

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