: These versions can run on both 32-bit and 64-bit Windows operating systems.
: While most VBA code works on both, 32-bit Office is required for older VBA code that uses 32-bit Declare statements or specific API calls without the PtrSafe attribute. Key Version Differences (32-bit) ABOUT Microsoft Office 2016/2019/2021 32-bit
Added Morph/Zoom in PPT, SVG support, and Data Analysis in Excel. Added Dynamic Arrays, XLOOKUP, and Dark Mode support. Windows 7 or later Windows 10 or 11 Windows 10 or 11 Performance Limitations : These versions can run on both 32-bit
You have custom-built internal applications (VBA/COM) that are strictly 32-bit dependent. ABOUT Microsoft Office 2016/2019/2021 32-bit
You use 32-bit third-party add-ins that lack a 64-bit version. You are running an older 32-bit version of Windows.