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Invalid user or password


Invalid user or password. This error is due to invalid credentials.


  • Try to log in to OWA with the appropriate credentials.
  • Ensure that the email address is primary SMTP address for the end user.
  • If you are using admin credentials, verify that you can login to the end user mailbox.
  • If you are using admin credentials ensure that admin account has sufficient rights.
  • Check authentication settings.


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