The honest answer: There never was.
Finding and using a Windows NT 3.1 ISO requires a bit of technical "archaeology." Because the OS was designed for hardware that is now over 30 years old, modern physical computers cannot run it natively. windows nt 3.1 iso
After installation, immediately install the "NT 3.1 Resource Kit" (often found on the same ISO or companion disks) to get utilities like SRVANY.EXE for running DOS apps as services. The honest answer: There never was
Remove the "floppy" when prompted and let the system boot from the virtual hard drive. ⚠️ Common Pitfalls windows nt 3.1 iso