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Since Windows 10 upgrade Firefox won't open, I'm able to execute it but the window won't maximize (I can see the small image when hovering over the taskbar)

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Daisy135
Daisy135
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Since Windows 10 upgrade Firefox won't open, I'm able to execute it but the window won't maximize (I can see the small image when hovering over the taskbar). I also remember that Firefox worked shortly after the upgrade for like a month but started to get slower. Also the last times it worked, it started to crash after startup and I had to kill the default startup page.

Since Windows 10 upgrade Firefox won't open, I'm able to execute it but the window won't maximize (I can see the small image when hovering over the taskbar). I also remember that Firefox worked shortly after the upgrade for like a month but started to get slower. Also the last times it worked, it started to crash after startup and I had to kill the default startup page.

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FredMcD
FredMcD
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You may have a corrupt xulstore.json file. https://support.mozilla.org/en-US/kb/changes-toolbars-and-window-sizes-are-not-saved