1. Open Firefox, type "about:config" into the location bar (without quotes)

2. Click "I'll be careful I promise" when the confirmation page comes up.

3. Below "preference name" right click, select new -> boolean.

4. Call it "extensions.checkCompatibility" (without quotes). Set the value to false.

What this does is disables Firefox from checking addon compatibility. So (after the tweak) when you install an older addon to a newer build of firefox, firefox won't check to see if it's compatible with it and will allow you to install.

(note:before doing step one, firefox should be closed)

1. Locate C:\WINDOWS\Microsoft.NET\Framework\v3.5\Windows Presentation Foundation\DotNetAssistantExtension

2. Delete everything in the folder.

3. Type about:config in the firefox address bar. Under filter type: "general.useragent.extra.microsoftdotnet" (without quotes)

4. Right click on the entry and select reset.

5. Restart Firefox.

Type about:config in the location bar > locate browser.urlbar.maxRichResults.

Set the value to 0.

Right click on the search bar untick Show Suggestions.

Open a new tab>type about:config (hit enter)>you may get this message


Click 'I'll be careful I promise'>in the filter bar at the top type, resize. You should get results like this



Change the value of 'dom.disable_window_move_resize' to true