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Your Firefox is out of date and may contain a security risk!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

unable to launch yahoo chess (Yahoo! Chess requires Flash Player 7 or later and JavaScript enabled in your browser.)


When trying to launch/play chess from the yahoo games website, I get the following message: "Yahoo! Chess requires Flash Player 7 or later and JavaScript enabled in your browser. I have verified that I do have Flash Player 10 installed and that JavaScript is enabled. I'm able to launch/play chess from Yahoo Games when I use IE as my browser.

Additional System Details

Sites Affected


Installed Plug-ins

  • Adobe Shockwave for Director Netscape plug-in, version
  • Fun Web Products Plugin Stub for 32-bit Windows
  • Next Generation Java Plug-in 1.6.0_26 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • 4.0.60531.0
  • Bing Bar
  • Office Authorization plug-in for NPAPI browsers
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • My Web Search Plugin Stub for 32-bit Windows
  • Version 1.1.6, copyright 1996-2011 The VideoLAN Teamhttp://www.videolan.org/
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.0


  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:6.0) Gecko/20100101 Firefox/6.0

More Information

SafeBrowser 550 solutions 2392 answers

You either do not have Flash installed for Firefox or it is disabled.

In Add-ons > Plugins, look for "Shockwave Flash (version)".

  • If it is there and you see an "Enable" button, click the "Enable" button; that means it was disabled.
  • If it is not there, you do not have it installed; see the following.

There are 2 versions of Adobe Flash; an ActiveX version for IE only and a Plugin version for most other browsers including Firefox. On a Windows system, you should always update both individually.

  1. Using Firefox, go to the following direct download link and SAVE the download to your desktop so you can find it later: http://fpdownload.adobe.com/get/flashplayer/current/install_flash_player.exe
  2. When the download is finished, close Firefox (File > Exit OR Firefox button > Exit)
  3. Click or double-click on the file you just saved to your desktop
    • In the installation window that appears, click the box to the left of "I have read and...." to place a check mark in the box
    • The "Install" button in the lower right corner will now be highlighted, click it.
    • The installation is quick.
  4. Start Firefox and test your installation here: https://www.adobe.com/software/flash/about/
  5. Direct link ActiveX version for IE only: http://fpdownload.adobe.com/get/flashplayer/current/install_flash_player_ax.exe

If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.

Modified by SafeBrowser