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A developer tools box keeps popping up

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A box with developer tools pops up multiple times during Firefox sessions. It is unclear what keystrokes bring this up...but it seems to happen randomly. Each time i have to manually close the box. Have not found a way of disabling this. Firefox Help does not have any information on this.

A box with developer tools pops up multiple times during Firefox sessions. It is unclear what keystrokes bring this up...but it seems to happen randomly. Each time i have to manually close the box. Have not found a way of disabling this. Firefox Help does not have any information on this.

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Here is a screen shot of the box that continually pops up

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You can see those keyboard shortcut in the "Firefox/Tools > Web Developer" menu. The Web Console opens with Ctrl+Shift+K.


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

  • Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window
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Shift+Ctrl+K opens the Web Console for me.

Keyboard shortcuts could vary with OS (or even locale). There are also other tools with shortcuts.

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I am not actually sure how to disable this but it should not popup unless you use the menus or keyboard shortcuts.

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Not sure which keystrokes bring it up (will try to be more aware), but am not hitting Shft+Ctrl+K when it pops up

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When it pops up...i am not using the menus of keyboard shortcuts.