Cannot open 'about.config"in either 'normal' or 'safe mode' in Firefox.

I'm trying to change the preferences in the About.config settings, but I can't get into "about.config" either Firefox in normal mode or Safe Mode Firefox.

For some strange reason, the ' topic: config ' now works. I tried Firefox closed and reopened many times, but about: config refused to work. Now, after posting my problem with the help of Mozilla, I went back to Firefox and could open on: config. Sorry about that.

Tags: Firefox

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