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I can't sign into firefox

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Firefox won't let me login. Keeps telling me that my username and password is invalid

Firefox won't let me login. Keeps telling me that my username and password is invalid

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Maybe you could explain a bit more. Firefox does not need you to login to use it.

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This can be caused by corrupted cookies or cookies that aren't send or otherwise blocked.

Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

  • Tools > Options > Privacy > Cookies: "Show Cookies"

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 or otherwise make changes.