Microsoft 365 - Authentication - Common Login Error Messages & Solutions


In this article, you will find common error messages received if login attempts to NEOMED Microsoft 365 applications are unsuccessful. Solutions are listed below each error message.

Common Error Messages

  • This username may be incorrect. Make sure you typed it correctly. Otherwise, contact your admin.
    • This error occurs when an email is entered using the correctly spelled NEOMED domain (, but an incorrectly spelled or non-existent username.
    • Solution: Check the spelling of the username portion of the email address.
  • We couldn't find an account with that username. Try another, or get a new Microsoft account.
    • This error occurs when the NEOMED domain extension ( is typed incorrectly, despite the username portion of the address being correct or incorrect.
    • Solution: Check the spelling of the NEOMED domain extension (
  • Enter a valid email address, phone number, or Skype name
    • This error occurs when deleting the content of the email field after receiving either of the above two error messages.
    • Solution: Enter a valid NEOMED email address (e.g., The error will disappear as you type.
  • Your account or password is incorrect. If you don't remember your password, reset it now.
    • This error occurs when an incorrect password is entered.
    • Solution: Check the password spelling. If you need to reset your password, you can utilize the ‘reset it now’ or ‘Forgot my password' links.
  • Sorry, your sign-in timed out. Please sign in again.
    • This error occurs if you are half-way through the sign-in process and went elsewhere for too long.
    • Solution: Retype your NEOMED email and password.
  • Sign-in is blocked. You've tried to sign in too many times with an incorrect account or password
    • This error occurs after too many login attempts with only NEOMED email address and password.
    • Solution: In the address bar of the browser, type and restart the login process using NEOMED email and password.
  • You've tried to sign in too many times with an incorrect account or password.
    • This error occurs when accidentally signing in with a different email account, such as or
    • Solution: Make sure the email address is using
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Article ID: 153053
Fri 1/6/23 1:27 PM
Tue 5/9/23 11:38 AM