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why do I get 2 identical windows when starting Firefox v29?

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running win7. process explorer shows only one process.

running win7. process explorer shows only one process.

All Replies (4)

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Firefox may open an additional window each time you re-launch from the icon, but if you aren't making extra clicks, it's hard to think of a reason for getting multiple windows.

Are there any extra command-line options? If you right-click your shortcut and choose Properties, then the Shortcut tab, you should only see the following in the Target box:

32-bit Windows:

"C:\Program Files\Mozilla Firefox\firefox.exe"

64-bit Windows:

"C:\Program Files (x86)\Mozilla Firefox\firefox.exe"

If any addresses or parameters follow that, try clearing them out (unless you added them intentionally, in which case, what are they?).

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In case one of your extensions is involved, could you try starting Firefox in its Safe Mode? That's a standard diagnostic tool to deactivate extensions and some advanced features of Firefox. More info: Diagnose Firefox issues using Troubleshoot Mode.

With Firefox running: you can restart in Safe Mode using

Help > Restart with Add-ons Disabled (Flash and other plugins still run)

With Firefox closed: you can start up in Safe Mode by holding down the Shift key when clicking (or on the desktop double-clicking) the icon.

In the small dialog that should appear, click "Start in Safe Mode" (not Reset)

Any extra windows?

Modified by jscher2000 - Support Volunteer

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Thanks for your prompt answers, but neither one is helpful. This behavior started with the latest update, ver 29. I tried several ways to revert to ver28, but apparently mozilla supplies ver 29 in response to any attempt to install any earlier version.

I am not double clicking and I get the same behavior when restarting in Firefox Safe mode. I guess it is time to go to Chrome, despite preferring Firefox.

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I'm amazed you would switch browsers because you get an extra window at startup. How often do you exit and restart the browser in a day? Or is this related to some other peculiar behavior (by Firefox, not by you) that you haven't mentioned?

If you understand the security risks of running Firefox 28, you can find a link in this article: Install an older version of Firefox.