Tabs are labeled (Untitled) when Firefox is started or a new tab is selected and no content displayed

I downloaded the myheritage.com software that automatically and without my consent changed my default browser from firefox to its own. I changed the default, but I still can't connect to the internet with firefox. The opening tab label is (untitled) and click on additional tabs the same product. In addition, none of the features - search for images etc. work, all lead to even empty, no content (Untitled) tab
Update of firefox had no effect

Your list of details more system shows the extension of XULRunner 1.9.1 called malware.

See/questions/743526 and/issues/749007

Tags: Firefox

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