By Andrew Armstrong 
The Command
Set-Mailbox "shared mailbox name" -Type:RegularReplace
"shared mailbox name" with the actual name or alias of the mailbox you want to convert. Once it completes, open the Exchange Management Console and confirm the mailbox now shows as a standard User Mailbox rather than a Shared Mailbox.
A Few Things to Check First
- Converting to a regular mailbox typically requires assigning it a valid Exchange license/CAL in environments where shared mailboxes were exempt, since shared mailboxes usually don’t consume a standard user license the same way.
- Review the existing Full Access and Send As permissions on the mailbox afterward — multiple people may still have delegate access left over from when it was shared, which you may want to trim down now that it belongs to a single user.
Resources
- previous post
- Exchange
- How to Export an Outlook Folder to a PST File (2026)
- Hands-On Review: Stellar Converter for OST
- How to add an Outlook Emoji to an Email
- Exchange 2007 – How to create a shared mailbox
- Exchange Server – Anti-Spam Recipient Filtering
- Exchange Mailbox Limits – Export None Default Quotas to CSV
- Office 2016 – Outlook and Exchange Compatibility
- How to export an Exchange Mailbox using Powershell (Exchange Management Shell)
- Exchange Server – Why are the emails in plain text format?
- Shared Mailboxes Sent Items in Outlook
- Microsoft Exchange Management Shell Commands – Get Mailbox Size Information
- Outlook Email Signatures Backup and Migration
- Fix Office 2010 and Office 2013 Products Compatibility & Mimecast Default Exchange Account Error
- Exchange Management Tools 2007 – add as an application in SCCM 2012
- Renew a Self Signed Certificate on an Exchange Server 2007
- Browse our General Tech Accessories picks on Amazon
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