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32 or 64 bit Java versions vs Firefox builds for Win 32/64 bit

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I have tried numerous possible scenarios to get Firefox working. I also understand this is a big revenue earning area in online support and troubleshooting - so commerical interests of various companies are there here.

Could someone please help me to solve my misery.

Fact: I have Windows 7 OS running on 64 bit (which obviously, I cannot change)

Assume, I use Java only for browsing pages with signed applets-

What version should be my installed Java run time - 32 or 64 bit ? What version should be my installed firefox 46v build - 32 or 64 bit ?

I have tried numerous possible scenarios to get Firefox working. I also understand this is a big revenue earning area in online support and troubleshooting - so commerical interests of various companies are there here. Could someone please help me to solve my misery. Fact: I have Windows 7 OS running on 64 bit (which obviously, I cannot change) Assume, I use Java only for browsing pages with signed applets- What version should be my installed Java run time - 32 or 64 bit ? What version should be my installed firefox 46v build - 32 or 64 bit ?

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For Java you'll need the 32-bit version of Firefox and the 32-bit version of Java. The Win64 version of Firefox only supports Flash and SiIverlight plugins.