Firefox 43, 45 Desktop Notifications Not Working

Hi @qwertypuffs, is there a reason you are using Firefox 45? I haven't heard of any desktop notification issues on the newer versions of Firefox, it might be good try those if you have the option. In terms of other troubleshooting, have you made sure to allow notifications on the page? To do this:

1. Right-click on Mattermost
2. Click Page Info
3. Select the "Permissions" tab,
4. Ensure "Receive Notifications" is set to "Allow"