From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Win 9x 4.90; en-US; rv:0.9.3) Gecko/20010801 BuildID: 20001080110 In Windows 2000 and Windows ME, if Mozilla is selected as the default browser for the http:// and https:// protocols, URLs are not launched correctly from the Run dialog (accessbale from the start menu) or the address bar, if embedded in the taskbar. There are always two browsers opened instead of one. One is visually corrupt, while the other has the requested URL opened correctly. Usually, but not always, Windows complains that "the file <URL> could not be found (or one of it's components)." Reproducible: Always Steps to Reproduce: From the Run dialog: 1.Ensure that mozilla is selected as the default browser for http(s): protocol. 2.Select "Run..." from the Start Menu. If this is not available, you will need to enable it with the Taskbar and Start Menu settings applet. 3.Type a URL into the dialog, such as "www.google.com" From the Address Bar: 1.Ensure that mozilla is selected as the default browser for http(s): protocol. 2.If there is no address bar on your taskbar, right click on the task bar, select Toolbars>Address. 3.Type a URL into the combo box on the address bar, such as "www.google.com." Actual Results: Usually, a dialog appears saying that the file (or one of its components could not be found). Two browser windows are always opened, one with the URL correctly opened, and another that appears visually corrupt (the skins aren't even drawn fully). This has been confirmed to occur identically on two machines: one with Windows ME and one with Windows 2000. Expected Results: Mozilla should behave the same way that Internet Explorer would behave. That is to say that a new Mozilla browser should be opened with the URL that was requested. I believe that this is a severe bug, because unless Mozilla is able to integrate into the operaring system seamlessly (meaning as MSIE would), fewer people will be willing to adopt it. Windows users are especially finicky about this sort of thing, especially when they have a particular way of opening a URL that they don't deviate from that Mozilla doesn't appear to handle correctly. It would be a shame for a superior application to be discarded because of a small integration issue. This may be realted to other bug reports stating that the favorites menu does not work. In my opinion, Mozilla should not replace the favorites menu with one of its own, it should simply be the browser launched from the favorites menu instead of IE.

*** This bug has been marked as a duplicate of 59078 ***