[cromag]

I think I have the same version of Windows: Windows 10, version 1709. One thing that has caused some problems for Firefox in the past was my video card, an Nvidia GT 750. It was causing previous versions of Firefox to go black until I disabled hardware acceleration.

Long story short, I was able to get it working tonight. Skipping over the obvious first steps (that didn't work), I finally ran Firefox in Safe Mode (held the Shift key down while starting the program). When I did that it opened in the postage stamp window, but I could drag the borders to a usable size. After I did that I was able to use the browser normally without having it disappear.

I went into the Add-ons menu. I only had two add-ons since the Quantum conversion, and they were disabled in Safe Mode. I manually disabled them, confirmed the browser still worked, and exited.

I then opened the browser normally. it opened in the postage stamp window again, but I could drag the borders to a usable size. After I did that I was able to use the browser normally without having it disappear. I then went back to the Add-ons menu and re-enabled the two add-ons. The browser continued to work, and so far all looks good.


Except ... I made Chrome my default browser for the duration of the problem. Now I'm trying to make Firefox my default browser again. But, when I'm in the Windows Settings window, Windows isn't presenting Firefox as an option. I tried a quick re-install of Firefox, but that didn't fix it.