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.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Firefox app download won't complete because "VCRUNTIME140_1.dll is missing"

  • 1 reply
  • 0 have this problem
  • 2 views
  • Last reply by cor-el

dandmharran
dandmharran
more options

I had Firefox installed as my default browser. Then it crashed and I couldn't 'repair' it. So I uninstalled then tried to re-install but each time that fails because I get a message that VCRUNTIME140_1.dll is not present

I had Firefox installed as my default browser. Then it crashed and I couldn't 'repair' it. So I uninstalled then tried to re-install but each time that fails because I get a message that VCRUNTIME140_1.dll is not present

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Did you recently uninstall an application that was using Visual C+ runtime components?

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, 2019, and 2022":

You may also have to install the Visual Studio 2013 Redistributable Package. You need to reboot the computer.