MCreator issue tracker has been migrated to GitHub.
Existing tickets have been migrated to GitHub. Please open new tickets on the GitHub tracker instead. If you do not have a GitHub account, all feature requests and bug reports from forums are still considered and checked by the maintainers.
MCreator supports most operating systems: https://mcreator.net/requirements
There must be a setup issue to prevent it from working. Try launching MCreator using a .bat file to see if this works. If you have any antiviruses installed, it could be that it is blocking MCreator from starting up.