In cases where your using specific Apps related to MS or Google Apps you should use their associate Browser to insure proper updates and connections. Edge for Microsoft site app/OneDrive and Chrome for Google Apps aka Google Drive or Docs. Firefox may not be up to task to handle Outlook security check to function correctly as Firefox doesn't have the resources to build that it would handle Outlook workings to match their security requirements to work without issues. So to insure your online apps and working meetings go without flaws it's best to use Edge for MS online apps and Chrome for Google online apps for best work and usage.