OST cannot be accessed because it is configured for a different mailbox error
I got this error after moving someone from a local Exchange 2003 server to Office 365. When you open outlook you will get a message saying: The file C:\Users\<username>\Local\Microsoft\Outlook\<emailaddress>.ost cannot be accessed because it has been configured for use with a different mailbox. From what I can figure out it is because it another exchange …