Yeah, like what the others have said: Totally suspect. This plug-in does not do anything in Firefox. I tried Webex without the plug-in and the web app works fine after you give the proper permissions inside FF.

I later installed the plug-in after I was able to get Webex to work as stated above, and did not notice anything different. What gives?

**Update**
FYI you need to have WebRTC enabled for WebEx to work properly inside FF. I was having issues of not being able to select my computer's audio (it wasn't even showing up as an option) and I wasn't able to select/see my webcam until I enabled WebRTC.

It also seems like the plug-in was needed before December 2019 in order for Webex to work inside a web browser. I believe with the advance of Firefox and the likes along with the re-writing of the Webex code from Cisco's side, that this plug-in is rendered obsolete. But it still does not make sense as this plug-in was updated on June 1, 2020 at the time of this writing.

It does nothing? I don't know how to activate it! (Linux Mint 19.2 Cinnamon here.)

Keep in only if you want Cisco to know everything you do on the web. Terrible privacy - it accesses too much and can send it to any one it chooses for essentially any purpose. If you use it delete it immediately after use.

NO Audio happens quite often. Cisco offers no solutions. What good is a webinar with no audio?

Didn't work

When i click a webex-link, this plugin doesn't seem to kick in on my Kubuntu 20.04 with FF

Screen sharing is not working (Firefox 68.8).

Why does this add-on need to access my data for all websites? It seems to just open Cisco WebEx meeting on the desktop app. I find this unjustifiably obtrusive.

Ridiculously intrusive permissions.

NO FUNCIONA EN UBUNTU 16.04 !!! PÉSIMO > : <

I found this addon installed in both my Firefox and Firefox Developer Edition installations (the latter in which I never opened the online Webex Meetings website). Joining an online meeting still works after uninstalling the extension. Therefore, it seems that the extension has no visible use, and asks to access data for all websites.

Don't know what the extension does, if anything.

Useless addon

Doesn't function in Firefox. Probably because Cisco can not get enough of your data through this browser. Don't use web services from companies who think and act like this. Will remove the app from my phone too.