Am Mon, 30 Apr 2018 10:35:00 +1000, schrieb Peter Jason:

But how does one "open as administrator" from the taskbar?

I do it all the time, at least for OpenVPN I do.
Here are my instructions in my setup file.

After installing OpenVPN, right click on the "OpenVPN GUI" desktop icon.
OpenVPN GUI:
Properties Shortcut Advanced [x]Run as administrator OK OK

That may be all you need, but I also did this too:
OpenVPN GUI:
Properties Compatibility Change settings for all users
[x]Run this program as an administrator OK OK

Hope this points you in the right direction.
If not, please feel free to ignore as I can only say it works for me.