How-To Technical

Office 365: Convert Mailbox to Shared Mailbox after Cutover Migration

When performing a cut-over migration the Exchange attribute indicating that the mailbox was a shared mailbox is lost. To correct this I have done the following steps: List out all of the shared mailboxes form my on-premises Exchange and export them into a CSV file. Get-Mailbox -ResultSize Unlimited -RecipientTypeDetails SharedMailbox | Select UserPrincipalName | Export-Csv […]