In a multi-tenant environment, you have an organization that contains many address lists (approximately 1,000). When you try to create a new profile or connect to Exchange Server 2013 by using MAPI-HTTP in your Outlook client, your attempts are unsuccessful. Additionally, you receive an error message that states that Outlook cannot open the mailbox.
Notice: This website is an unofficial Microsoft Knowledge Base (hereinafter KB) archive and is intended to provide a reliable access to deleted content from Microsoft KB. All KB articles are owned by Microsoft Corporation. Read full disclaimer for more details.