Some folks here are missing the point, I think.
I encountered the same behavior as OP, in that under Windows 7, I could run SONAR without any UAC warning. After I upgraded to Win10, nothing I could do could prevent this UAC dialog from appearing.
I made no changes to my UAC settings (that I know of) and I certainly don't have UAC disabled under Windows 7.
Anyway, I reverted to Windows 7 for other reasons so this no longer affects me. But it definitely seems to be some kind of change in how UAC is treating Sonar.
I do wonder if a clean install of Windows 10 followed by a clean install of Sonar would end up with the same situation.