When trying to activate Webgl on Firefox, I misspelled "Webgl" and wrote "Weblg".

I tried to remove it from about:config with delete key or seeing right mouse click options on it, but without success...

Any help?


Googling about, I found that solution:

Close Firefox. Backup the prefs.js file located in your profile folder. Open the original prefs.js in a text editor. Remove erroneous key, and save.

-- Brian


Simply reset the entry that you want to delete in about:config and then restart firefox et Voilà !

I don't know how long this solution will remain valid but it works fine at least for now...

  • It doesn't work as of at least Firefox 59. (I initially though that it was) – tuxayo Jan 31 '18 at 12:52
  • @TUXAYO,can you precise ,please, what was the behaviour of firefox ? – jihed gasmi Feb 7 '18 at 20:56
  • If I recall correctly, the key was still there with an empty value. – tuxayo Feb 26 '18 at 11:40

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