If you need ArcGIS 10.6 specifically (e.g., for a class or to open old .mxd files), use the or a student license . Both are completely legal, safe, and supported.
| Component | Requirement | |-----------|--------------| | OS | Windows 7 SP1, 8.1, 10 (64-bit required) | | CPU | 2.2 GHz or higher, dual-core | | RAM | 4 GB minimum (8 GB recommended) | | Disk space | 4.5 GB (plus additional for data) | | Graphics | DirectX 9.3 or higher compliant, 256 MB RAM | | .NET Framework | 4.5 or higher |
License and deployment | ArcGIS Maps SDK for .NET - Esri Developer