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can't open "about:config"

thomasmatthews
thomasmatthews
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every time I open FIREFOX there is BOX WHICH SAYS....EMBARASSING....TABS, WINDOWS...CLOSE / Restore and can't get "about:config"....I have Mountain Lion on MacbookPro and Snow Leopard on my iMac...

It is annoying ...started after updating to version 20.0 Tom:-) 16.4.13

every time I open FIREFOX there is BOX WHICH SAYS....EMBARASSING....TABS, WINDOWS...CLOSE / Restore and can't get "about:config"....I have Mountain Lion on MacbookPro and Snow Leopard on my iMac... It is annoying ...started after updating to version 20.0 Tom:-) 16.4.13

All Replies (4)

Dron Rathore
Dron Rathore
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Hi Thomas, Try opening Firefox in Safe mode, if it didn't work, open a new tab type in navigation bar about:support. On the page that opens click on Reset Firefox. If that won't fix your problem, there are 2 more alternatives:

  1. Reinstall Firefox
  2. Downgrade to previous version from here

Cheers!

philipp
philipp
  • Moderator
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hello, can you specify why you cannot open about:config/what happens if you try?

you should be able to reach it by just entering about:config into the firefox address bar (see screenshot).

Modified by philipp

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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A likely cause is that you are first closing all Firefox windows and then close the Firefox application.

Some have reported that closing Firefox (Firefox > Quit) while the browser window is still open works for them.

  • Bug 845681 - Closing all windows and quitting Firefox afterwards leads to about:sessionrestore to be shown on next startup

(please do not comment in bug reports: https://bugzilla.mozilla.org/page.cgi?id=etiquette.html)

thomasmatthews
thomasmatthews Question owner
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Thanks for all the help....problem seems solved.

Tom:-) 18.4.13