Also, 64-bit applications can access more memory than 32-bit applications (up to 18.4 million Petabytes). Reasons to choose the 64-bit versionĬomputers running 64-bit versions of Windows generally have more resources such as processing power and memory, than their 32-bit predecessors. If you're still not sure which version, 32-bit or 64-bit is a better choice for you, see the section below. See “Office (64-bit or 32-bit) couldn’t be installed” error. The same is true if you installed the 32-bit version, but want to install the 64-bit version. Important: If you install the 64-bit version, but want the 32-bit version instead, you must first uninstall the 64-bit version before installing the 32-bit version.
