Microsoft Account Is Showing Up As Not Existing (Hacked/Deleted?)

Hi, sorry you are dealing with that. If the sign-in page says the Microsoft account does not exist, it can mean the alias was changed, the account was closed, or you are trying a different email than the one currently attached.

Start with Microsoft's account recovery and username recovery pages, and secure the email account you used for receipts in case someone got into that first. Also search your email for Microsoft security notices, alias-change messages, Minecraft purchase receipts, and Xbox/Microsoft order numbers.

Minecraft ownership normally cannot just be moved to a different Microsoft account by the community, so you will probably need Microsoft/Minecraft support with the receipt or order ID. Do not post the receipt, key, full email address, or transaction details publicly. Keep those for the official support form only.