Convert Shared Mailbox to user mailbox with PowerShell

Sometimes converting a shared mailbox to an user mailbox is not working from the Exchange Admin console in Office 365. 

If this is the case then you can try to convert the user mailbox with Powershell.

Note: Current Outlook connections to the shared mailboxes will stop working after you convert. 

1. First set a Office license to the user. The user must have a valid MS Office license it is possible to have a Office Exchange mailbox.

(in the case you need additional support please contact 2tCloud Support)

1. Connect to Exchange Online with PowerShell

• Start PowerShell in Administrative mode

• run the next commands:

  • Install-Module -Name AzureAD

  • Install-Module MSOnline

  • $UserCredential = Get-Credential

  • Create a persistent connection to a local or remote computer (https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/new-pssession?view=powershell-7.1 )

  • Import-PSSession $Session

  • Set-Mailbox [MAILBOXNAME] -Type Regular

1. Check Exchange Admin portal to see the mailbox is away in 'Shared Mailbox' , and is visible in 'Mailboxes' from the users

2. Optional: Maybe you want/need to add the mailbox again in the customers Outlook profile.