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

Firefox shrinks to smallest size possible when starting and shows error about a massing jar:file when expanded

  • 1 tontu
  • 1 am na jafe-jafe bii
  • 1 view
  • i mujjee tontu mooy Standard8

more options

When expanded, the full error message is: "File not found

Firefox can’t find the file at jar:file:///C:/Program Files/Mozilla Firefox/browser/omni.ja!/chrome/browser/content/browser/browser.xul."

When expanded, the full error message is: "File not found Firefox can’t find the file at jar:file:///C:/Program Files/Mozilla Firefox/browser/omni.ja!/chrome/browser/content/browser/browser.xul."

All Replies (1)

more options

This sounds like something in the installation has become corrupt. You probably want to try re-installing Firefox and see if that helps.