Add-MailboxPermission

The AccessRights parameter specifies the permission that you want to assign to the user on the mailbox. Valid values are:

• ChangeOwner

• ChangePermission

• DeleteItem

• ExternalAccount

• FullAccess

• ReadPermission

You can specify multiple values separated by commas.

The Identity parameter specifies the mailbox where you want to assign permissions to the user. You can use any value that uniquely identifies the mailbox.

For example:

• Name

• Display name

• Alias

• Distinguished name (DN)

• Canonical DN

• <domain name>\<account name>

• Email address

• GUID

• LegacyExchangeDN

• SamAccountName

• User ID or user principal name (UPN)

The Instance parameter is no longer used and will be deprecated.

The Owner parameter specifies the owner of the mailbox object. The default mailbox owner is NT AUTHORITY\SELF.

The owner that you specify for this parameter must be a user or security group (a security principal that can have permissions assigned). You can use any value that uniquely identifies the owner. For example:

For example:

• Name

• Display name

• Distinguished name (DN)

• Canonical DN

• GUID

The User parameter specifies the user that you're assigning the permission to.

The user that you specify for this parameter must be a user or security group (a security principal that can have permissions assigned). You can use any value that uniquely identifies the user. For example:

For example:

• Name

• Display name

• Distinguished name (DN)

• Canonical DN

• GUID

The AutoMapping parameter specifies whether to enable or disable the auto-mapping feature in Microsoft Outlook that uses Autodiscover to automatically open other mailboxes for the user. Valid values are:

• $true: Outlook automatically opens the mailbox where the user is assigned Full Access permission. This is the default value.

• $false: Outlook doesn't automatically open the mailbox where the user is assigned Full Access permission.

If you've already assign the user Full Access to the mailbox, and you want to prevent the mailbox from automatically opening in the user's Outlook, you need to remove the user's Full Access permission by using the Remove-MailboxPermission cmdlet, and then assign the permission to the user on the mailbox again, but this time include -AutoMapping $false in the command.

The Confirm switch specifies whether to show or hide the confirmation prompt. How this switch affects the cmdlet depends on if the cmdlet requires confirmation before proceeding.

• Destructive cmdlets (for example, Remove-* cmdlets) have a built-in pause that forces you to acknowledge the command before proceeding. For these cmdlets, you can skip the confirmation prompt by using this exact syntax: -Confirm:$false.

• Most other cmdlets (for example, New-* and Set-* cmdlets) don't have a built-in pause. For these cmdlets, specifying the Confirm switch without a value introduces a pause that forces you acknowledge the command before proceeding.

The Deny switch specifies whether to deny the specified permissions to the user on the mailbox. You don't need to specify a value with this switch.

This parameter is available only in on-premises Exchange.

The DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory. You identify the domain controller by its fully qualified domain name (FQDN). For example, dc01.contoso.com.

The IgnoreDefaultScope switch tells the command to ignore the default recipient scope setting for the Exchange Management Shell session, and to use the entire forest as the scope. This allows the command to access Active Directory objects that aren't currently available in the default scope.

Using the IgnoreDefaultScope switch introduces the following restrictions:

• You can't use the DomainController parameter. The command uses an appropriate global catalog server automatically.

• You can only use the DN for the Identity parameter. Other forms of identification, such as alias or GUID, aren't accepted.

The InheritanceType parameter specifies how permissions are inherited by folders in the mailbox. Valid values are:

• All

• Children

• Descendents[sic]

• SelfAndChildren

The WhatIf switch simulates the actions of the command. You can use this switch to view the changes that would occur without actually applying those changes. You don't need to specify a value with this switch.