Sending, receiving, and organizing email in Outlook.com
Greetings!
This is Tin, sorry to hear that you cannot access your account. The error that you are getting is due to temporary blocks, verification issues or account restrictions, you can try the other verification method if it will let you to sign in.
Have you tried other sign in options already?
Please also try to connect to other network connection and check if you will get the same issue.
Please try to check other browser and see if the issue persists.
Please let me know how it goes.
Thanks,
Tin