Question

Contoso has a shared mailbox named support@contoso.com used by the help desk team. The mailbox has grown to 48 GB and is approaching its storage limit. The team also wants to enable in-place archiving for the mailbox to retain older support tickets. As the Microsoft 365 administrator, what must you do to support both the increased storage and the archive feature?

Accepted Answer

Assign a Microsoft 365 or Exchange Online (Plan 2) license to the shared mailbox

Answer

Convert the shared mailbox to a user mailbox and increase the quota with a PowerShell command

Answer

Enable auto-expanding archiving at the tenant level, which raises all shared mailbox quotas to 100 GB automatically

Answer

No license is required; shared mailboxes always include 100 GB of storage and archiving by default