Hello @Anonymous
There is a similar post here where our Installation & Licensing expert replied with the steps to try and have it resolved: https://forums.autodesk.com/t5/installation-licensing/upgraded-to-win10-maya-2019-and-2020-now-wont-load/td-p/9230029 Please let us know if this helps you out at all!
So sorry to hear that - have you tried a clean uninstall and then reinstall? See if that works, you may want to reach out directly to our installation experts if that is not working either: https://autode.sk/2B0G6kr
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