After upgrading the win10 LTSC version, MAX2018 crashes when opening the interface. This may be due to compatibility issues between the upgraded operating system and MAX2018. You can try to reinstall MAX2018 or install patch programs to solve this problem. It is also recommended to check the official website of MAX2018 for any patches and updates related to operating system upgrades. If the issue persists, you can contact MAX2018 technical support for further assistance.