Forum Discussion
Performance Issues with Outlook When Delegating Large Mailboxes (Exchange Online)
Hello! We're using Exchange Online, and most users access their mail through the Outlook (classic) desktop app. A common scenario in our organization is that users need temporary access to a cowork...
You can disable auto mapping with the Download shared folders disabled
Add-MailboxPermission -Identity email address removed for privacy reasons -User email address removed for privacy reasons -AccessRights FullAccess -AutoMapping:$false
This will keep the primary mailbox in cached mode, and additional mailboxes in online mode
Best
Ahmed Masoud