Solution
Although this is not an officially supported feature, you may be able to use it offline by following these steps:
For the host PC: Install MeasurementsLive > 2.2. You can find the Measurements Live Support Files on NI Package Manager.
For ELVIS III: Update the firmware to version 7.0 or higher using NI MAX. You can keep the RT Image as ELVIS III 19.1.

Accessing ELVIS III: Open a web browser and manually type the URL: https://measurementslive.ni.com.