X
Tap here to go to the mobile version of the site.
Your Firefox is out of date and may contain a security risk! Upgrade Firefox

Support Forum

Why am I periodically getting the message that my version of Firefox is outdated or not supported?

Posted

On my 2008 MacBook Pro with OS 10.6.8, I am using Firefox 17.0.1.

Chosen solution

This is because your User Agent String (what tells websites the browser you use) is corrupt. You can fix it by following these directions: http://support.mozilla.org/en-US/kb/websites-say-firefox-outdated-or-incompatible

Read this answer in context 3

Additional System Details

Installed Plug-ins

  • Shockwave Flash 10.3 r183
  • Displays Java applet content, or a placeholder if Java is not installed.
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in web pages. For more information, visit the QuickTime Web site.
  • The Flip4Mac WMV Plugin allows you to view Windows Media content using QuickTime.
  • 5.1.10411.0
  • The Google Earth Plugin allows you to view 3D imagery and terrain in your web browser.
  • Widevine Media Transformer Plug-In 5.0.0.4679
  • RealPlayer Plugin
  • Garmin Communicator Plug-in Version 2.9.2.0
  • Picasa plugin.
  • iPhoto6

Application

  • User Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.1.5) Gecko/20091102 Firefox/3.5.5 FBSMTWB

More Information

Tyler Downer
  • Administrator
  • Moderator
1165 solutions 6640 answers

Chosen Solution

This is because your User Agent String (what tells websites the browser you use) is corrupt. You can fix it by following these directions: http://support.mozilla.org/en-US/kb/websites-say-firefox-outdated-or-incompatible

Question owner

Thank you... problem solved!