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.

After downloading newest version Firefox won't open, running Vista on desktop

  • 1 reply
  • 3 have this problem
  • 1 view
  • Last reply by cor-el

carolefullerton@hughes.net
carolefullerton@hughes.net
more options

When I signed on I was prompted to update...the update was successful. Then I was prompted to update my flash player which I tried to do. I thought everything went thru ok. Now when I click on Firefox it won't open at all.

When I signed on I was prompted to update...the update was successful. Then I was prompted to update my flash player which I tried to do. I thought everything went thru ok. Now when I click on Firefox it won't open at all.

All Replies (1)

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

A possible cause is security software (firewall) that blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.

See: