Since this happened I've also installed an older version as well (72.0.2) and it works just fine. It's what I'm using to be here. It's just 73 that is stuck. Other browsers I use are Opera (works just fine) and IE (also works) I don't use IE for anything but it works. 

Updated yesterday. Now firefox is not working. It starts just fine but can't seem to access the internet. I've checked my security software and found no blocking occurring. If I click on help/about that window pops up but the links in it do not work However it does say it is up to date. The troubleshooting page opens but the options page won't. That is unless I choose to refresh firefox, then sometimes it loads but once I close and reopen firefox or try to access another webpage it's gone and won't come back. It is not running in compatibility mode. I've tried running it in compatibility mode but again nothing. I've tried using different profiles (old and new) and still nothing. When I try to load a page there is nothing happening at all. No little wait sign, no messages... nothing. After closing firefox and then checking task manager I can see that firefox is still running. From there I can manually close it. The instances that are still running seem to be for whatever I tried to load that didn't. Since this happened I've also installed an older version as well (72.0.2) and it works just fine. It's what I'm using to be here. It's just 73 that is stuck. Other browsers I use are Opera (works just fine) and IE (also works) I don't use IE for anything but it works. My OS is Win8.1 64bit my browsers are also 64bit. Found this in event viewer: Faulting application name: firefox.exe, version: 73.0.0.7342, time stamp: 0x5e3dd850 Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000 Exception code: 0xc0000005 Fault offset: 0x00007ff9a553012a Faulting process id: 0x1b88 Faulting application start time: 0x01d5e1d49b6bc89e Faulting application path: C:\Program Files\Mozilla Firefox\firefox.exe Faulting module path: unknown Report Id: d93c17c1-4dc7-11ea-8379-00241d8dcb2d Faulting package full name: Faulting package-relative application ID: