Type about:config<enter> in the address bar. If a warning screen comes up, press the Be Careful button. At the top of the screen is a search bar. Type browser.startup.homepage

What is the value? Right-click and select Reset to restore its default value; about:home

Could you describe this problem in a little more detail:

Is it the "Browser Console" (separate window that normally appears when you press Ctrl+Shift+j), or the "Web Console" (appears in the lower part of the tab when you press Ctrl+Shift+k), or some other console that you could describe?

Is it appearing instead of or in addition to your home page?

Does not fix problem

billcrowell said

Does not fix problem

Your problem might get solved if you'd answer the questions jscher2000 asked you .......

does not fix problem

billcrowell said

does not fix problem

Giving it one more try :

If you want your problem solved, would you please be so kind as to answer the questions jscher2000 asked you  ?

No one has given a fix that deletes the browser console window that pops up when I enter firefox browser.

Try to start Firefox in Safe Mode to see whether that works.

• Windows: hold down the Shift key while starting Firefox
• Mac: hold down the Options key while starting Firefox

You can check the target line in the Firefox desktop shortcut (right-click: Properties) to make sure nothing is appended after the path to the Firefox program.

• https://support.mozilla.org/en-US/kb/wrong-home-page-opens-when-i-start-firefox-how-fix

You just sent me this   Private Message :

"I answered his question multiple times "

My reaction :   where  ?

You mention a 'window' and not a toolbar, so this is complete stab in the dark :

Would you try this :

Type in the address bar about:config (press Enter) (promise to be careful, if asked) Type and look for the preference : devtools.toolbar.enabled and set its value to false