This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Firefox won't load pages, settings, etc

  • 1 cavab
  • 1 has this problem
  • 25 views
  • Last reply by cor-el

more options

Firefox had an update today, so I clicked the update button. When I launched it again it:

- won't load any webpages. It doesn't even try to load pages. - I can't even load about:support - won't open settings from the menu - won't open the add-ons so I can't try disabling any extensions. - It won't launch it troubleshoot mode

I've uninstalled, rebooted my machine, installed Firefox again and the above behavior still happens.

The "about firefox" still works and says I have the latest version: 91.0.1

Any thoughts on what I should try next?

Firefox had an update today, so I clicked the update button. When I launched it again it: - won't load any webpages. It doesn't even try to load pages. - I can't even load about:support - won't open settings from the menu - won't open the add-ons so I can't try disabling any extensions. - It won't launch it troubleshoot mode I've uninstalled, rebooted my machine, installed Firefox again and the above behavior still happens. The "about firefox" still works and says I have the latest version: 91.0.1 Any thoughts on what I should try next?

All Replies (1)

more options

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":

You may not need the latter (32-bit version) if you use 64-bit Firefox. You may have to reboot the computer.