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Why Firefox 64 bit application is not upgrading Firefox 32 bit?

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I have installed Firefox 32 bit on my 64 bit operating system and upgraded the same with Firefox 64 bit. After Upgrade, I noticed that there are two entries in control panel one is for 32 bit and another one is for 64 bit application and they have seperate files.

I have installed Firefox 32 bit on my 64 bit operating system and upgraded the same with Firefox 64 bit. After Upgrade, I noticed that there are two entries in control panel one is for 32 bit and another one is for 64 bit application and they have seperate files.
Sarin'efijery napaingotra

Novain'i Prabha t@

Vahaolana nofidina

Firefox 32-bit doesn't "update" to the 64-bit version. You have two separate versions of Firefox 43.0.3 installed, which may be a good idea considering the Win 64-bit version only supports the Flash and Silverlight Plugins. If you need Java or any other Plugins for Firefox you can switch to the 32-bit installation. Overall, the NPAPI Plugin system is being phased out within the next year or so; this limitation with Win 64-bit Firefox is one of the first steps in that phase-out. In the not too distant future web browsers won't need Plugins, HTML5 Audio / Video and other "standards" will handle what Plugins are now needed for.

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Vahaolana Nofidina

Firefox 32-bit doesn't "update" to the 64-bit version. You have two separate versions of Firefox 43.0.3 installed, which may be a good idea considering the Win 64-bit version only supports the Flash and Silverlight Plugins. If you need Java or any other Plugins for Firefox you can switch to the 32-bit installation. Overall, the NPAPI Plugin system is being phased out within the next year or so; this limitation with Win 64-bit Firefox is one of the first steps in that phase-out. In the not too distant future web browsers won't need Plugins, HTML5 Audio / Video and other "standards" will handle what Plugins are now needed for.