About License Keys and Files
This section is applicable to installations involving a license file activation type. This licensing method is gradually being replaced by the user credentials activation type starting with Thermo‑Calc 2025a.
To run Thermo‑Calc and its components you need a valid license key for each product. The license keys are included in the license file emailed to you by Thermo‑Calc Software.
You can copy the license file to the applicable computer(s) before or after installing the software––the license file itself is not required during the installation process. However, it is required to make calculations in Thermo‑Calc.