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

I've downloaded Firefox 3.6 but www.thismachine.info says I'm using Firefox 3.0.13.

  • 1 reply
  • 9 have this problem
  • 4 views
  • Last reply by Helper7677

more options

I'm trying to use Firefox to work in Constant Contact. When I try to create or edit an e-mail in Constant Contact using Firefox as my browser, I get an error message that says I'm using an older version of Firefox and need to update to 3.5 or higher. I've re-installed (uninstalled Firefox and then re-installed) the latest version of Firefox (3.6) and I still get this error message. When I go to this website (www.thismachine.info), it tells me that I'm using Firefox 3.0.13. Why the discrepancy?

I'm trying to use Firefox to work in Constant Contact. When I try to create or edit an e-mail in Constant Contact using Firefox as my browser, I get an error message that says I'm using an older version of Firefox and need to update to 3.5 or higher. I've re-installed (uninstalled Firefox and then re-installed) the latest version of Firefox (3.6) and I still get this error message. When I go to this website (www.thismachine.info), it tells me that I'm using Firefox 3.0.13. Why the discrepancy?

All Replies (1)

more options

Something that you have installed currently or in the past has interfered with the reporting of Firefox's User-agent (see: http://en.wikipedia.org/wiki/User_Agent)

For details of how to reset your User-agent, see websites or add-ons incorrectly report incompatible browser.



The information submitted with your question indicates that you have out of date plugins with known security issues that should be updated. To see the plugins submitted with your question, click "More system details..." to the right of your original question post.

  • Adobe Shockwave for Director Netscape plug-in, version 11.5
  • Adobe PDF Plug-In For Firefox and Netscape "9.3.3"
    • You are currently 1 update behind
    • Adobe plans releasing another update the week of 2010-11-15 which will make your current version 2 updates behind
  • Shockwave Flash 10.0 r32
  1. Check your plugin versions: http://www.mozilla.com/en-US/plugincheck/
    • Note: plugin check page does not have information on all plugin versions
  2. Update Shockwave for Director
    • NOTE: this is not the same as Shockwave Flash; this installs the Shockwave Player.
    • Use Firefox to download and SAVE the installer to your hard drive from the link in the article below (Desktop is a good place so you can find it).
    • When the download is complete, exit Firefox (File > Exit)
    • locate and double-click in the installer you just downloaded, let the install complete.
    • Restart Firefox and check your plugins again.
    • Download link and more information: http://support.mozilla.com/en-US/kb/Using+the+Shockwave+plugin+with+Firefox
  3. Update Adobe Reader (PDF plugin):
    • From within your existing Adobe Reader (if you have it already installed):
      • Open the Adobe Reader program from your Programs list
      • Click Help > Check for Updates
      • Follow the prompts for updating
      • If this method works for you, skip the "Download complete installer" section below and proceed to "After the installation" below
    • Download complete installer (if you do NOT have Adobe Reader installed):
      • Use Firefox to download and SAVE the installer to your hard drive from the link in the article below
      • On the Adobe page, un-check any extra items (i.e. Free McAfee® Security Scan Plus) then click Download button
      • If you see message just under tabs, DO NOT click the Allow button, instead click below that where it says "click here to download".
      • Click "Save to File"; save to your Desktop (so you can find it)
      • After download completes, close Firefox
      • Click the installer you just downloaded and allow the install to continue
        • Note: Vista and Win7 users may need to right-click the installer and choose "Run as Administrator"
      • Download link and more information: https://support.mozilla.com/en-US/kb/Using+the+Adobe+Reader+plugin+with+Firefox#Installing_and_updating_Adobe_Reader
    • After the installation, start Firefox and check your version again.
  4. Update Shockwave Flash