Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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

Updated Firefox to 8.0 but now Firefox will not start? Ideas?

  • 3 replies
  • 31 have this problem
  • 1 view
  • Last reply by starsh1

more options

Last night Downloaded Firefox 8.0 - but it hung up "checking addons for compatibility" came away from that Firefox wont start or if it does start it hangs immediately. Have made permissable by Mcaffee firewall. deleted it re downloaded version 7.0, version 8.0 again and back to 4.0 None of these work - add seem to hang up checking the add-ons. Google Chrome works fine but how do I get firefox to work - any ideas?

Last night Downloaded Firefox 8.0 - but it hung up "checking addons for compatibility" came away from that Firefox wont start or if it does start it hangs immediately. Have made permissable by Mcaffee firewall. deleted it re downloaded version 7.0, version 8.0 again and back to 4.0 None of these work - add seem to hang up checking the add-ons. Google Chrome works fine but how do I get firefox to work - any ideas?

Chosen solution

I have the same problem. Firefox browser 8.0 will not start after update or reinstall. I download firefox version 6.0.2 from Google site it working fine now.

Read this answer in context 👍 2

All Replies (3)

more options

Chosen Solution

I have the same problem. Firefox browser 8.0 will not start after update or reinstall. I download firefox version 6.0.2 from Google site it working fine now.

more options

Great I shall try that this evening - fingers crossed. Thanks for your comment. Much obliged.

post script - YES this worked: perfect thanks so much.

Modified by Hodjster

more options

I have fire fox 7 with a message that i am not on latest version of fire fox upgrade today which i tried without success. still on7. would not have this problem if fire fox would not constantly upgrade every three to four months i just changed to 7 about a month or two ago. browser people are going crazy with up grades. it is very difficult to keep up and is extremely annoying.