Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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.

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

Messenger doesn't work using the firefox since I upgraded, however if I click on internet explorer I can use my messenger icon.

more options

Ever since I upgraded the mozilla firefox new version a few weeks back, my yahoo messenger does not work. I have to download the application then I get a message error stating side by side configurations do not correspond, but if I use the Internet explorer then I can chat with my friends.

Ever since I upgraded the mozilla firefox new version a few weeks back, my yahoo messenger does not work. I have to download the application then I get a message error stating side by side configurations do not correspond, but if I use the Internet explorer then I can chat with my friends.

All Replies (1)

more options

Its known issue, see;

its fixed on Firefox 10 Beta!