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

Some websites say I need to upgrade my browser even though I already did.

  • 3 replies
  • 76 have this problem
  • 2 views
  • Last reply by cor-el

more options

Hey,

I've downloaded the last version of Firefox like 5 times but some sites like Youtube, Myspace and Twitter keep telling me that I need to upgrade Firefox because my version is no longer supported. I also have the latests versions of Flash Player and Java. I've tried everything, uninstalling those three and installing them again. And if I use Google Chrome or even an older version of Internet Explorer everything seems right. This just happens while on Firefox. What's going on?

I'm asking this because I like to use Firefox and I don't want to have to migrate to Chrome.

Thank you,

Andrea.

Hey, I've downloaded the last version of Firefox like 5 times but some sites like Youtube, Myspace and Twitter keep telling me that I need to upgrade Firefox because my version is no longer supported. I also have the latests versions of Flash Player and Java. I've tried everything, uninstalling those three and installing them again. And if I use Google Chrome or even an older version of Internet Explorer everything seems right. This just happens while on Firefox. What's going on? I'm asking this because I like to use Firefox and I don't want to have to migrate to Chrome. Thank you, Andrea.

Chosen solution

Try resetting the user agent (identifies the browser version), yours is identifying itself as Firefox 2.0.0.17

For details of how to do that see How to reset the default user agent on Firefox. It gives details of a series of preferences that will need to be reset.

Read this answer in context 👍 1

All Replies (3)

more options

Chosen Solution

Try resetting the user agent (identifies the browser version), yours is identifying itself as Firefox 2.0.0.17

For details of how to do that see How to reset the default user agent on Firefox. It gives details of a series of preferences that will need to be reset.

more options

Thanks for your help, this solved my problem : )

more options

In your case it was caused by the MEGAUPLOAD 2.0 toolbar, so if you still have that toolbar then keep an eye on the user agent after updating Firefox.