Tekla Structures 21.1 is designed for older 64-bit Windows environments. It is not officially supported on Windows 11.
32-bit operating systems are not supported for this version. Tekla User Assistance Hardware Recommendations Processor (CPU): Intel Core i5 2.0 GHz (or dual/quad-core equivalent). Recommended: Intel Core i7 3.0+ GHz for optimal performance. Memory (RAM): Recommended: 16GB to 32GB, depending on model complexity. Graphics Card: 512MB dedicated RAM with OpenGL support. Recommended: tekla 21.1 system requirements