This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

tried to open Private browsing and get message "the url is not valid and cannot be loaded"

  • 1 reply
  • 1 has this problem
  • 2 views
  • Last reply by cor-el

weegee
weegee
more options

up graded Firefox directly from older version to latest version and problem cropped up. Latest version on my laptop which is out of service and in shop works fine and on my net book works fine. Should I have done it in steps?

up graded Firefox directly from older version to latest version and problem cropped up. Latest version on my laptop which is out of service and in shop works fine and on my net book works fine. Should I have done it in steps?

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

See also:

Modified by cor-el