This error message may prompt you to re-enter the password of your Outlook. The account which created the message could not be found.
A message in your Outlook could not be sent. “An unknown error has occurred in Outlook. Suppose, you get an error message while sending an email in Outlook 2011 for Mac: Let us take an example to understand a scenario related to this issue. Hence, their corruption can lead to inaccessibility of all the files (including emails, contacts, etc) stored in them. Like Outlook PST files in Windows, OLM files in Outlook 2011 are used for storing entire mailbox data. Keeping this in mind, Microsoft launched Outlook 2011 for Mac users. After seeing its vast set of advantages like maintaining and managing calendar entries, contacts, notes, and all such useful stuff, various other Operating Systems wanted its version compatible with their machines.
Gone are the days when Microsoft Outlook was available only for Windows Operating Systems only.
