Can I run Microsoft Office 95 or later on Windows 3.1?
No. The newer versions of Microsoft Office can only be used on Windows 95 or later. The last 16-bit version of Office is MS Office v4.2 or v4.3 (these are both exactly the same release, containing Word 6.0, Excel 5.0, etc.; but v4.3 is the so-called “Professional Edition” which also includes Access v2.0). Both are floating around on the used market for $20-35.