Here are the possible reasons we can't find your mailbox: {0}1. Your mailbox was recently migrated.{0}2. An Office 365 license ...

Here are the possible reasons we can't find your mailbox: {0}1. Your mailbox was recently migrated.{0}2. An Office 365 license that includes an Exchange license isn't assigned to your account "{1}".{0}3. You have a valid license, but the Mail service was disabled by your admin.{0}4. Your license is expired.{0}{0}Contact your Office 365 admin for help.