If your organization relies on complex VBA macros that use specific 32-bit Windows API calls, they may require rewriting to function on the 64-bit platform. Where to Find Installation Files MS office 32 or 64-bit on Windows 10 PC

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Before we dive into the specifics of MS Office 2019 64-bit, let's first understand the difference between 32-bit and 64-bit software. The main difference between the two is the amount of memory they can address. A 32-bit application can address up to 2 GB of memory, while a 64-bit application can address much larger amounts of memory, theoretically up to 16 exabytes.