We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

I'm one of the thousands who've allowed mozjs.dll to be deleted as commanded by malware checker. How do I get it back?

  • 1 tontu
  • 4 am na jafe-jafe bii
  • 1 view
  • i mujjee tontu mooy rbillings

more options

Need to reinstall mozjs.dll

Need to reinstall mozjs.dll

All Replies (1)

more options

Hi nasheagle-

I would recommend uninstalling and reinstalling a fresh version of the latest Firefox to get the .dll back. Here are the steps:

       •	Get the latest: http://www.mozilla.org/en-US/firefox/new/

• Uninstall your current Firefox version. • Do not remove personal data when you uninstall the current version. Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer. • It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling. Your bookmarks and other profile data are stored elsewhere in the Firefox Profile Folder and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.

Hope that helps!