Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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.

Can't install firebug in firefox for xp in VM and no xpinstall.signatures.required in about:config.

aiapple97
aiapple97
more options

Hi, i can't install firebug in firefox for xp （firefox 3.6.28 installed in VM 12.5.7）so i searched Internet for answers. Many suggested turning xpinstall.signatures.required to false but i failed to find xpinstall.signatures.required in about:config . Is there anything else to solve it ?

Hi, i can't install firebug in firefox for xp （firefox 3.6.28 installed in VM 12.5.7）so i searched Internet for answers. Many suggested turning xpinstall.signatures.required to false but i failed to find xpinstall.signatures.required in about:config . Is there anything else to solve it ?

All Replies (1)

the-edmeister
the-edmeister
  • Moderator
more options

firefox 3.6.28 = Really? That is a version dating to April 2012. Support ended long ago.

xpinstall.signatures.required didn't become a preference until (like) Firefox 39 (July 2015), so no wonder it's not in Firefox 3.6.28.

Firebug 1,7.3 is what you need: https://addons.mozilla.org/en-US/firefox/addon/firebug/ See the compatibility table on that page.

But, for some strange reason that version was "signed" due to it being compatible up thru Firefox 5.0; not sure how that would affect it installing / or not installing in 3.6.28. The "auto-signing" that was done at AMO didn't happen until 2015, long after my personal experience with the old Firefox 3.6 had ended.

Are you getting any error message or warning message when you try to install Firebug 1.7.3? If so, please provide a screenshot of that message.