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License and Installation Information

License and Installation Information

If you are having problems related to your installation, you can help us by providing your basic license and diagnostic information available in Thermo-Calc when you Request Support.

Site Number

Your site number can be found in the license information as well as on an invoice or any correspondence from Thermo-Calc.

License Information

To access the basic license and diagnostic information:

  1. From the Thermo-Calc menu, select Help>Show License Info.
  2. Copy the information shown in the License Information window.
    Make sure to scroll to the end as lot of information may be shown below the initial screen.
    In Console Mode, you can also copy the same information by using the SYS module command DISPLAY_LICENSE_INFO.
  3. Paste the copied information into the email you send. Be sure to read the instructions on the Request Support page.

Installation Types

To determine the type of installation, you can search the Help in Thermo-Calc (Help>Online Help) or you can look at the installation guide in the license and installation types section.

TC-Python Troubleshooting

Instructions about troubleshooting and running a diagnostic script for TC-Python are described on the TC-Python Help page.

TC-Toolbox for MATLAB® Troubleshooting

Instructions about troubleshooting and running a diagnostic script for TC-Toolbox for MATLAB® are described on the TC-Toolbox for MATLAB® Help page.

Read and download user guides, release notes, and more.

Access presentations, bibliographies, free databases, and more.

Check out our upcoming training courses.

Contact our experienced support team.


Year track record


Citations in journals


Citations in patent applications


Organizations around the world

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