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i download Firefox various times, but when i want to open, its appearing in the taskbar at the underside. When clicking there the program disappearing on the rightside of the screen

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I used Mozilla Firefox for a long time, but after downloading the latest version it went wrong. After downloading and clicking on the programicon, it appeared in the taskbar at the underside of my screen. When clicking on that you can see the program is going very fast of the screen on the right side. With other words i cant open Firefox under no condition and the reason could by the Program MyStart, thats what it said MyStart by Incredimail. I hope you understand my english becoz im dutch and dont know so well how to explain this all.

I used Mozilla Firefox for a long time, but after downloading the latest version it went wrong. After downloading and clicking on the programicon, it appeared in the taskbar at the underside of my screen. When clicking on that you can see the program is going very fast of the screen on the right side. With other words i cant open Firefox under no condition and the reason could by the Program MyStart, thats what it said MyStart by Incredimail. I hope you understand my english becoz im dutch and dont know so well how to explain this all.

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Open the system menu via Alt+Space and see if you can resize that window. If that works then close Firefox to save that setting. See also http://kb.mozillazine.org/Resizing_oversize_window


Window sizes and positions are stored in localstore.rdf in the Profile Folder.

Delete localstore.rdf or rename the file to localstore.rdf.sav in the Profile Folder to test if the file is corrupted.

See http://kb.mozillazine.org/Corrupt_localstore.rdf
(caution: do not delete the localstore.rdf file in the Firefox program installation folder)