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!

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.

Stopping developer windows from opening

  • 2 replies
  • 1 has this problem
  • 5 views
  • Last reply by cor-el

help4yourpc
help4yourpc
more options

Sometimes when I go to a websites (cnn,msn, redit,ebay, amazon) the developer window opens. I when to about:config and turned all the items off but it is still happening.

The system is windows 7 with all patches, latest version of Java and firefox.

How do I stop this ?

Sometimes when I go to a websites (cnn,msn, redit,ebay, amazon) the developer window opens. I when to about:config and turned all the items off but it is still happening. The system is windows 7 with all patches, latest version of Java and firefox. How do I stop this ?

All Replies (2)

Ajay Kumar Jogawath
Ajay Kumar Jogawath
more options
  1. In the Location bar, type about:config and press Enter. The about:config "This might void your warranty!" warning page may appear.
  2. Click I'll be careful, I promise!, to continue to the about:config page.
cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe Mode start window.

Are you pressing any of the possible shortcut keys (F12, Ctrl+I/J or others) that might open the developer toolbar or Web Console are haven't you pressed any keys including the Ctrl key when this happens?