There are a lot of posts about this so you might have found the answer in the past three hours, but just in case:

Firefox 41 no longer uses the browser.newtab.url setting in about:config because it was constantly attacked by malware. Starting in Firefox 41, you need an add-on to change the new tab page.

Here are some options (I learn of more all the time):

• If you already use the Classic Theme Restorer extension: There is an option somewhere (!) in its extensive settings dialogs to select a different new tab page.

• If you want to use your home page on the new tab: Try https://addons.mozilla.org/firefox/addon/new-tab-homepage/

• If you want to set a different page or a completely blank page: Try https://addons.mozilla.org/firefox/addon/new-tab-override/

Please only use one of these methods at a time, otherwise there may be conflicts and dysfunctionality.

Setting up New Tab Override

After installing this extension, you need to use its Options page to set the desired new tab page (instead of using about:config).

Open the Add-ons page using either:

• Ctrl+Shift+a (Mac: Cmd+Shift+a)
• "3-bar" menu button (or Tools menu) > Add-ons

In the left column, click Extensions. Then on the right side, find New Tab Override and click its Options button. (See first screen shot attached.)

Depending on the height of your screen, you may need to scroll down to enter the desired address into the form. (See second screen shot attached.) For example:

• Page thumbnails (default) => about:newtab
• Blank tab => about:blank
• Built-in Firefox home page => about:home
• Any other page => full URL to the page

Then tab or click away from that form field and you can test using Ctrl+t.

Success?

Once you have it set the way you want, you can close the Add-ons page (or use the Back button to return to the Extensions list from that Options page).

Classic Theme Restorer includes this feature as well. In CTR version 1.3.9 you can find the "New tab page url" in the Tabs (1) window.

https://support.cdn.mozilla.net/media/uploads/images/2015-09-24-19-25-43-71a1f9.png

There are other things that need attention.

Your System Details List shows multiple Flash plugins.

1. Shockwave Flash 18.0 r0
2. Shockwave Flash 19.0 r0

You can find the installation path of all plugins on the about:plugins page.

• http://kb.mozillazine.org/Issues_related_to_plugins#Identifying_installed_plugins

You can check the Flash player installation folder for multiple Flash player plugins and remove older version(s) of the plugin (NPSWF32) and possibly (re)install the latest Flash player.

• (32 bit Windows) C:\Windows\System32\Macromed\Flash\
• (64 bit Windows) C:\Windows\SysWOW64\Macromed\Flash\

Thanks heaps! Decided to use the homepage add-on in the end, kudos guys