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Grant Full Mailbox Access

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Requirements

  1. Download the Microsoft Online Services Sign-in Assistant.
  2. Download and install the PowerShell Msonline Module.

System Requirements

Supported Operating Systems

Windows Vista   Windows Vista Service Pack 1  Windows Vista 64-bit Editions Service Pack 1
Windows Vista Home Basic Windows Vista Home Basic 64-bit Edition
 Windows XP 
Windows Vista Home Premium
 Windows Vista Home Premium 64-bit Edition
 Windows XP Professional Edition 
Windows Vista Business Windows Vista Business 64-bit Edition Windows XP Service Pack 2
Windows Vista Enterprise Windows Vista Enterprise 64-bit Edition Windows XP Service Pack 3
Windows Vista Ultimate  Windows Vista Ultimate 64-bit Edition Windows XP Tablet PC Edition

Requirements provided to subscribers via the Microsoft Online Services Administration Center or My Company Portal. This product intended for use with Microsoft Online Services only.

Downloadable Tools

Microsoft Online Services Sign-in Assistant Setup (now required for MSONLINE powershell)
http://office.microsoft.com/en-us/word-help/redir/XT102098586.aspx?CTT=5&origin=HA102065466

PowerShell Msonline Module
http://g.microsoftonline.com/0BD00en-US/85

Step-by-Step

After the download is completed, please copy and paste this section into the PowerShell window. And enter your credentials.

Copy
  1. $Cred = Get-Credential
    $Session= New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlok.com/powershell/-Credential
    $Cred-Authentication Basic-AllowRedirection
    Import-PSSession $Session
  2. Import-Module MSOnline
    $Creds = Get-Credential
    Connect-MsolService –Credential $Creds

Commands

Grant Full Mailbox Access

To grant full mailbox access to a user other than the mailbox owner by using PowerShell, use the following command line:

Add-MailboxPermission-Identity <Mailbox ID 1> -User <Mailbox ID 2> -AccessRights FullAccess -InheritanceType All

In this command line, <Mailbox ID 1> represents the mailbox that you want to grant permissions to and <Mailbox ID 2> is the mailbox of the user who you want to grant Full Access permission.

Grant Full Mailbox Access(Make User Owner)

If an administrator wants to grant a user access to a room mailbox, the administrator may want to specify that user as the Owner. To do this, use the following command line:

Add-MailboxPermission -Identity <Mailbox ID 1> -Owner <Mailbox ID 2>

Note

Only users who have Exchange mailboxes can be granted access to other mailboxes. Users who do not have mailboxes receive a permissions error when they try  to access the other mailboxes.

Verify Permissions

To verify that the permissions are applied to Mailbox ID 1, use the following command:

Get-MailboxPermission -Identity <Mailbox ID 1> | Select User, AccessRights, Deny

In the results, you should be able to confirm that <Mailbox ID 2> has been granted Full Access permission.

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Sam Dawsen | E-mail: v-sadaws@microsoft.com

Office 365 Technical Support Engineer