The “Your account has been locked” error occurs when some Xbox One users try to log in to their console using their Microsoft account. The error message is accompanied by error code 0x80a40014. Affected users will not be able to access digitally owned games or retrieve saved game data from their accounts.
Which Causes the “Your Account Has Been Locked” Error (0x80a40014) on Xbox One
Microsoft TOR Violation: This particular error can occur when the Microsoft account owner has violated TOR. In most cases, aggressive player behavior, hacking, or phishing will cause Microsoft to suspend the account without warning. If this scenario applies, the only reasonable recovery strategy is to contact Microsoft support.