Hi Mike, I'm not sure about the combination of the download not completing, but also having a button to start Firefox. So here are two suggestions:

Installation. In case this is a problem with the "Stub" installer, could you download a full installer as described in the following article: Custom installation of Firefox on Windows. Does that work any better?

Blank Browser Window. Do you recall seeing any errors related to a missing VCRUNTIME140_1.DLL file? It can cripple Firefox if a different program installer messes with this shared file. To rule that out, you can run Microsoft's installer for the VC Runtime files:

(A) Open https://support.microsoft.com/en-us/topic/the-latest-supported-visual-c-downloads-2647da03-1eea-4433-9aff-95f26a218cc0

(B) In the first section of the article -- "Visual Studio 2015, 2017 and 2019" -- download the 64-bit installer.

(C) Run that installer and restart Windows.

Go to the Mozilla Add-ons Web Page {web Link} (There’s a lot of good stuff here) and search for a download manager.

This download manager works separately from the browser. The browser tells it what to download, and off it goes.

http://www.freedownloadmanager.org It is a powerful modern download accelerator and organizer for Windows and Mac.

Thank you FredMcD for posting your reply to my question. I looked where you suggested. Nothing seemed to help me there. I will continue my efforts to get Firefox downloaded. I turned off antivirus and tried again. Same result. Just not sure what is going on. Thanks anyway. Mike Owens

Thank you jscher2000 for your reply to my posting. I tried the custom installation of Firefox on Windows. Unfortunately the same result. The app fails to complete the download. Not sure how large the Firefox app is but I do download 392 MB. Just guessing this is way to small.

Have not tried your second recommendation. Kind of scares me but will give it a try. Really don't want to end up in the MS Edge world.

I tried the custom installation of Firefox on Windows. Unfortunately the same result. The app fails to complete the download. Not sure how large the Firefox app is but I do download 392 MB.

The Firefox installer for 64-bit Windows, U.S. English, is only 53 megabytes. The size is shown on this server:

http://archive.mozilla.org/pub/firefox/releases/92.0.1/win64/en-US/

Idea 1:

Start your Computer in safe mode with network support. Then start Firefox. Try Secure websites. Is the problem still there?

Starting Any Computer In Safe Mode (web link) Free Online Encyclopedia

https://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/

https://www.digitalcitizen.life/4-ways-boot-safe-mode-windows-10/ +++++++++++++++++++++++++++++++++++++++++++++++ If the problem goes away with the computer in Safe Mode, the problem is with one of the other programs on the system.

As a test, disable your protection programs.

Idea 2: Using another computer, Download Firefox Full Version For All Languages And Systems onto a thumb drive. After, plug the thumb into your system. http://www.mozilla.org/en-US/firefox/all/

Again Thank You both (FredMcD and jscher2000) for your assistance. You helped me solve my problem. I followed up one of your suggestions which was Firefox Setup 92.0.1exe 53M 22-Sep-2021 23:19. This executable loaded the Browser without a problem.

If this summary might help anyone else let me do a quick summary. I have a new HP AIO. In addition to Windows 10 there is also loaded a free 30 day Microsoft 365 version running. Have no interest but it came loaded by BestBuy. Could this be causing me my loading issue when I attempted to use Edge to get to Firefox loading page. This was when I was unable to complete the download. Someone smarter then me might make some sense of this.

The other item was the HP came loaded with Chrome which I uninstalled as soon as I opened my computer.

For whatever reason the above executable worked and the one on the Mozilla site did not.

Thanks again for my help. I do love Mozilla and Firefox. Mike Owens