Problems opening Office 365's webmail's e-mail's links to launch MS Teams mac OS app in Firefox?

[AntDude]

This was in an updated mac OS v10.14.6 and Firefox v78.0.1. I had to keeping redownloading its app to join MS teams meetings. :(

Thank you for reading and hopefully answering soon. :)

[#2]

What kind of problema? Please describe them or share a screenshot

[#3]

Clicking to join the meeting invite link in e-mail doesn't launch MS Teams app. Can't show screen shots since no errors or anything. It just doesn't work.

[#4]

@AntDude Ok, your browser's version is not supported by Teams.

Here's a complete list of supported browser.

https://docs.microsoft.com/en-us/microsoftteams/limits-specifications-teams#browsers

On a Mac, Chrome works nice.

[#5 · Accepted solution]

@AntDude It looks like this is a bug in the latest version of Firefox. I found a post on Reddit about it:

https://www.reddit.com/r/firefox/comments/hjvzfq/cannot_open_microsoft_teams_links_since_latest/

As a workaround, the link to open Teams will work if you have the Firefox Developer Tools open. (Either click on Menu > Web Developer > Toggle Tools, or press the F12 key.)

[#6]

@Ryan SteeleWow. Good find since it was working in the past. I wonder who has to fix it. Mozilla? MS? Both?

[#7]

https://bugzilla.mozilla.org/show_bug.cgi?id=1650162 for its bug report. I hope Mozilla fixes it soon.

[#8]

V78.0.2 is out with the fix according to https://www.mozilla.org/en-US/firefox/78.0.2/releasenotes/!