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 not working at all.

  • 3 replies
  • 1 has this problem
  • 129 views
  • Last reply by jbriordan

more options

Was deleting bloatware, being very careful of course. Somehow VCRUNTIME140_1.dll got deleted/corrupted. Firefox could not find the dll file. Found, and installed new dll file. I can download and run browser, but the bookmarks I have left after install don't work, starting Firefox in safe mode was no help. Trying to change profile, typing about:profiles in address bar does not take me anywhere. I have uninstalled and reinstalled Firefox many times, to no avail. I'm turning to you for help, suggestions please.

Was deleting bloatware, being very careful of course. Somehow VCRUNTIME140_1.dll got deleted/corrupted. Firefox could not find the dll file. Found, and installed new dll file. I can download and run browser, but the bookmarks I have left after install don't work, starting Firefox in safe mode was no help. Trying to change profile, typing about:profiles in address bar does not take me anywhere. I have uninstalled and reinstalled Firefox many times, to no avail. I'm turning to you for help, suggestions please.

Chosen solution

  1. Enter this link: https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads
  2. From the section Visual Studio 2015, 2017 and 2019 download the following executable file: vc_redist.x64.exe
  3. Install this file
  4. Restart the computer and run Firefox
Read this answer in context 👍 1

All Replies (3)

more options

hello jb,

we dont know what version of windows you have.

did you look into the windows recycle bin and see if many of the files you deleted were still in limbo, that you could undelete?

did you also happen to use the FF sync feature?

do you also have the new MS browser called Edge installed?

more options

Chosen Solution

  1. Enter this link: https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads
  2. From the section Visual Studio 2015, 2017 and 2019 download the following executable file: vc_redist.x64.exe
  3. Install this file
  4. Restart the computer and run Firefox
more options

Thank you TyDraniu. After days of troubleshooting myself, you solved it in a matter of moments. Thanks again JR