v3.71 or later (v3.90 recommended).

| Operating System | Compatibility | Notes | |------------------|---------------|-------| | Windows 7 SP1 (32/64) | | Native, tested, ideal | | Windows 8.1 (64-bit) | Full | Install as Admin | | Windows 10 LTSC 2015/2016 | Limited | Works but not officially certified | | Windows 10 Pro (20H2+) | Unstable | RSLinx issues, project corruption risk | | Windows 11 | Not supported | Avoid |