[https://support.mozilla.org/en-US/kb/Installing%20Firefox%20on%20Windows Installing Firefox on Windows] see also [http://www.mozilla.org/en-US/firefox/system-requirements.html Firefox 9.0 system Requirements] and [https://support.mozilla.org/en-US/kb/Updating%20Firefox Updating Firefox] thank you Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

You may need to reset your User Agent; it could have been altered/frozen by some other software that you installed. *See --> https://support.mozilla.com/en-US/kb/websites%20or%20add-ons%20incorrectly%20report%20incompatible%20browser#w_reset-your-user-agent *See --> http://kb.mozillazine.org/Resetting_your_useragent_string_to_its_compiled-in_default *See --> http://en.wikipedia.org/wiki/User_Agent '''If this reply solves your problem, please click "Solved It" next to this reply when <u>signed-in</u> to the forum.''' ------------------------- Not related to your question, but... You may need to update some plug-ins. Check your plug-ins and update as necessary: *Plug-in check --> http://www.mozilla.org/en-US/plugincheck/ *Adobe Shockwave for Director Netscape plug-in: [https://support.mozilla.com/en-US/kb/Using%20the%20Shockwave%20plugin%20with%20Firefox#w_installing-shockwave Installing ('''''or Updating''''') the Shockwave plugin with Firefox] *'''''Adobe PDF Plug-In For Firefox and Netscape''''': [https://support.mozilla.com/en-US/kb/Using%20the%20Adobe%20Reader%20plugin%20with%20Firefox#w_installing-and-updating-adobe-reader Installing/Updating Adobe Reader in Firefox] *Shockwave Flash (Adobe Flash or Flash): [https://support.mozilla.com/en-US/kb/Managing%20the%20Flash%20plugin#w_updating-flash Updating Flash in Firefox] *Next Generation Java Plug-in for Mozilla browsers: [https://support.mozilla.com/en-US/kb/Using%20the%20Java%20plugin%20with%20Firefox#w_installing-or-updating-java Installing or Updating Java in Firefox]