macOS Installation Notes

In some types of installations (e.g. a network installation), you may have to restart your Mac to use Thermo‑Calc for the first time.

To install and run Thermo-Calc on a Mac computer with an ARM processor, Rosetta first needs to be installed.

The XQuartz open-source X Windows system is required to run Thermo‑Calc on macOS but it is not required to install Thermo‑Calc. Before installing Thermo‑Calc, you may also need to ensure that the computer security permissions are set.

The XQuartz open-source X.Org X Window system is required to run Thermo‑Calc on macOS.

1. In a web browser go to https://www.macupdate.com or to download it directly from XQuartz, https://www.xquartz.org/.
2. In the Search Mac Apps field, enter XQuartz.
3. Click the XQuartz search result. For example, based on the recent version, the name is XQuartz-2.8.5.dmg.
4. Click Download.
5. Double-click the XQuartz-<version>.pkg file. Follow the instructions.
6. Click OK when the message about logging out displays and click Close when the installation is successful.

1. From the Apple main menu, select System Preferences.
2. Click Security and Privacy.
3. Click General. At the bottom of the Security & Privacy window, click the lock icon to make changes. Enter the administrator password as required.
4. If you have already tried to launch the Thermo‑Calc installer, you can click Open Anyway to proceed. Otherwise, under Allow apps downloaded from: click Anywhere and then Allow from Anywhere.
5. Continue with the applicable installation type (standalone or network).

Remember to reset your security after installing Thermo‑Calc.