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firefox 57 crashing at startup even in safe mode

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It won't launch at all, even in safe mode (shift click on Firefox icon). When I open process explorer it shows Werfault.exe only , firefox.exe won't even appear. This happens only after updating Firefox to 57 version. I cleaned sustem with ccleaner, tried starting Firefox directly from exe - didn't helped. Downgrading to 56 or lower versions solves this problem, it only happens on version 57 either 32 bit or 64 bit.

It won't launch at all, even in safe mode (shift click on Firefox icon). When I open process explorer it shows Werfault.exe only , firefox.exe won't even appear. This happens only after updating Firefox to 57 version. I cleaned sustem with ccleaner, tried starting Firefox directly from exe - didn't helped. Downgrading to 56 or lower versions solves this problem, it only happens on version 57 either 32 bit or 64 bit.

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OS - WIndows 7 SP1 64 bit, No antivirus installed.

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