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How do I determine whether I am running on a 64-bit version of Firefox or a 32-bit version of Firefox?

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How do I determine whether I am running on a 64-bit version of Firefox or a 32-bit version of Firefox? I only need a solution for this question so I can continue and finish updating my out-of-date plug-ins.

Thank you, Steven Stone

How do I determine whether I am running on a 64-bit version of Firefox or a 32-bit version of Firefox? I only need a solution for this question so I can continue and finish updating my out-of-date plug-ins. Thank you, Steven Stone

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If you type "about:buildconfig" in the address bar of Firefox, I think you should get that information.

Edit: Bolded for emphasis.

글쓴이 AJ Godinho 수정일시

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There are no 64-bit versions of Firefox for Windows. The 64-bit versions have been Minefield and Nightly tester builds, never labeled as Firefox.