Skype for Business invite not working?

For whatever reason I have no idea what “app” I’m supposed to download in order to get a Skype for Business meeting working… and I keep getting an invite that wants to just launch “that app”. I recall solving the problem in the past with a web search… so given that I’ve had to do this several times I think I should just make a note here.

You can append ?sl=1 to the URL to force the meting to use the web browser experience.

To accomplish this task, copy/paste the invite (URL) to the browser address field and append ?sl=1 to it.

Example:

https://join.microsoft.com/meet/somesuch/AZMXXA3?sl=1