Scan your antivirus. If it is windows, then use a full scan of windows defender, Mac or linux, download mcafee antivirus scanner. https://www.mcafee.com/consumer/en-us.../mcafee-total-protection-trial.html Hope this helps! -Zombieslayer57

Sure would appreciate a little help with my inquiry. I participate in Zoom meetings and the meeting it keeps trying to open is with someone I know. There isn't a meeting going on and I'm not asking to join any meeting -- but the Zoom window keeps opening and requiring me to close it. Help!

Mozilla has nothing to do with Zoom. Why would you expect more help than was given above in the post.

You have Zoom set to auto start with Windows and there are multiple ways to turn that off including inside the Zoom Program. Or Uninstall the Zoom Program.

It has nothing to do with Firefox ask Zoom Support. Google how to to do this in Win 7

Please use more than 1 scanner as each uses diff tech : https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware Save your Report and google each before deleting anything as do not want to delete something you need, If need help : https://forums.malwarebytes.com/topic/9573-im-infected-what-do-i-do-now/ Post in only 1 forum, then wait.

Please let us know if this solved your issue or if need further assistance.

Pkshadow said

Mozilla has nothing to do with Zoom. Why would you expect more help than was given above in the post. You have Zoom set to auto start with Windows and there are multiple ways to turn that off including inside the Zoom Program. Or Uninstall the Zoom Program. It has nothing to do with Firefox ask Zoom Support. Google how to to do this in Win 7

Thanks for trying to be helpful, but Zoom was not set to start when Windows initiates, nor was the setting to "Silently start Zoom when I start Windows", so while I know Zoom has nothing to do with Firefox -- the only time it happens is when I use Firefox. And I don't use any other web browser. The only expectation I had was that I might get a little help because my teenager said I should ask. That's all. I'll try to figure it out.

In Firefox 56 and earlier, with the old "new tab page," sometimes a tile from history would trigger an odd behavior such a message that Firefox wanted to launch a different application. The approach to that was to remove any tiles that might trigger the unwanted behavior. I don't know if that is an issue with the new "Activity Stream" page, or whether you have that page as your home page.

Example old thread: Why does another application launch when I open a new tab? Plug-in is in Firefox and I can't get ride of it.

Hey, yeah, I had this exact problem. It's infuriating. But it appears to be something about URL's that are present in your history having default behavior. I removed the zoom links that were present in my history, and the problem went away. Of course, once my work colleagues send me a zoom link, it sometimes would start happening again. Not all the time. But sometimes. Totally totally infuriating. I had just switched back to Firefox after years with Chrome, so I could check out Quantum. I like Quantum a lot. But this zoom thing is making me consider switching back. It's completely unacceptable that opening a new empty tab actually opens an entirely different application.