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Firefox will not open, was fine last night but trying to open this morning it is as if it has disappeared, no window opens up at all

It is as if Firefox has disappeared from my desktop. I click on the shortcut but nothing happens. It was working fine last night. I have tried uninstalling/reinstalling b… (funda kabanzi)

It is as if Firefox has disappeared from my desktop. I click on the shortcut but nothing happens. It was working fine last night. I have tried uninstalling/reinstalling but still nothing. A window does not even appear.

Moderator note: This question has need edited to add the OS info provided by the OP.

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Firefox closes on start-up and re-opens empty, master password dialog doesn't appear.

My firefox has been acting weird all of a sudden. Usually when I open firefox it loads all my tabs of the previous session and prompts me to enter my master password. But… (funda kabanzi)

My firefox has been acting weird all of a sudden. Usually when I open firefox it loads all my tabs of the previous session and prompts me to enter my master password. But now when I start firefox, it opens for a brief moment and then instantly closes again. When I open firefox again all I get is a new empty window without any tabs, the password prompt also doesn't appear. So I have to manually open my last closed window to get the old window with all the tabs back (so I guess the window that closes instantly was the proper one) but the master password prompt won't show up. I can't access all my saved passwords in the password manager since I'm expected to sign in but when I click on "sign in" nothing happens - I guess the master password dialog just doesn't show up blocking me out of it. The only solution I have found so far is to go to about:support and clear start-up cache data. When it reopens afterwards I get the working window back, with my saved tabs and the master password dialog shows up - everything works. But it only works for this session, when I reboot the computer I have to do the whole issue again. Opening it in safe-mode also works but I need my addons and since it starts after clearing startup cache I don't think the addons are to blame. It just happened all of a sudden, I didn't install any updates or new version prior to the error.

Can anyone please help me? :(

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