Tekla 21.1 System Requirements __exclusive__ -

It was released around 2015–2016, when Windows 7 and 8.1 were current. If you run it on Windows 10/11, you may encounter display glitches, installer issues, or performance instability — especially with newer graphics drivers.

Sarah sat down at the keyboard and performed a hard reboot. As the computer restarted, she pulled up the Task Manager. "Elias, look at this. Your Physical Memory usage is at 98% just loading the splash screen. Tekla 21.1 requires a 64-bit operating system to utilize anything over 4 gigs efficiently. Your machine is choking on the data. It’s trying to drink a milkshake through a coffee stirrer." tekla 21.1 system requirements

Trimble defines two tiers: