Download not starting

Windows 10 Enterprise LTSC. The download link does not start for Firefox, Opera, or Internet Explorer.

The pop up to start the download/install is not coming up on my system. Is there not a way to download the software directly?

Do you have App installer in your computer?

Since you are on LTSC it may be different for you:

How to install UWP (Modern UI) apps on Windows 10 LTSC/LTSB:
Install Microsoft Store Apps on Windows 10 LTSC:

No App Installer on the PC. Both those options require me to get the direct link to the app in the Microsoft store to access the .appx I could not find Audirvana in the MS store to follow either suggestions.