Modern versions (5.0, 6.0, 7.0+) are exclusively 64-bit and typically require Windows 10 or later.
Finding a MongoDB download for Windows 8.1 32-bit is challenging because MongoDB officially stopped supporting all 32-bit operating systems several years ago. The last version to offer 32-bit support was , and Windows 8.1 support ended with version 4.2 (which required a 64-bit architecture). Critical Availability Information mongodb download for windows 8.1 32 bit
MongoDB 3.2.22 is the final release that supports 32-bit Windows systems. Modern versions (5
How to Download & Install MongoDB 3.2 on Windows 8.1 (32-bit) Modern versions (5.0
On a 32-bit system, MongoDB is limited to approximately 2GB of data .