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Firefox does not load,

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I have had Firefox downloaded for a considerable amount of time and had begun to use it as my daily browser, until I started experiencing issues, concerning the loading. I have experienced this issue in all cases when trying to open the browser through the desktop shortcut, other icons, and even the .exe file, and typically I will see a brief white screen of Firefox before it immediately closes again. Frustrating to say the least and a quick google provides no insight. I have attempted on multiple occasions to uninstall and reinstall, however to no avail, and have even tried to create a new profile, via the Run (Firefox.exe -P) but again with no success. Running the browser in Safe Mode (Shift) will also work for a split second with the dialogue opening and then instantly shutting. Any suggestion on a potential fix would be great.

Chosen solution

FredMcD said

Some problems occur when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again;
  • Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
  • Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see
[https://support.mozilla.org/en-US/kb/configure-firewalls-so-firefox-can-access-internet Configure firewalls so that Firefox can access the Internet.] {web link}
Thanks man, this helped me to solve my problem.

cor-el said

Also make sure you run the latest Firefox version (86.0.1).
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All Replies (4)

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Some problems occur when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again;

  • Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
  • Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see

Configure firewalls so that Firefox can access the Internet. {web link}

Helpful?

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You can check for issues caused by a corrupted or incomplete Visual C++ installation that is missing runtime components (Redistributable Packages) required by Firefox, especially VCRUNTIME140_1.dll.

See "Visual Studio 2015, 2017 and 2019":

Helpful?

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Also make sure you run the latest Firefox version (86.0.1).

Helpful?

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Chosen Solution

FredMcD said

Some problems occur when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again;
  • Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
  • Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see
[https://support.mozilla.org/en-US/kb/configure-firewalls-so-firefox-can-access-internet Configure firewalls so that Firefox can access the Internet.] {web link}
Thanks man, this helped me to solve my problem.

cor-el said

Also make sure you run the latest Firefox version (86.0.1).

Helpful?

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