$allmailbox = Get-Mailbox -Resultsize Unlimited

Foreach ($Mailbox in $allmailbox)

{Set-mailboxfolderpermission –identity ($Mailbox.alias+’:calendar’) –user Default –Accessrights AvailabilityOnly}

Working with Calendar Permissions in Bulk on Exchange 2010 Sp2

Wanted to collate all the calendar permissions which is used in Exchange 2010 Sp2.

Lets see How to Change Calendar Permissions in Bulk . To Restrict Free/busy or Allow Free/busy

How to Get Calendar Permissions For a Specific Mailbox ?

Default Calendar permissions of a Mailbox

Get-MailboxFolderPermission –Identity “EmailAddress”:calendar |fl

How to Change (Allow/Restrict) Calendar Permission for a Specific Mailbox ?

To Allow Free/busy

Set-MailboxFolderPermission –Identity “EmailAddress”:calendar -User Default -AccessRights AvailabilityOnly

To Restrict Free/busy

Set-MailboxFolderPermission –Identity “EmailAddress”:calendar -User Default -AccessRights None

How to Change Calendar Permission in Bulk ?

To Allow Free/busy for all Mailboxes in the Organization

$allmailbox = Get-Mailbox -Resultsize Unlimited

Foreach ($Mailbox in $allmailbox)

{Set-mailboxfolderpermission –identity ($Mailbox.alias+’:calendar’) –user Default –Accessrights AvailabilityOnly}

To Restrict Free/busy for all Mailboxes in the Organization

$allmailbox = Get-Mailbox -Resultsize Unlimited

Foreach ($Mailbox in $allmailbox)

{Set-mailboxfolderpermission –identity ($Mailbox.alias+’:calendar’) –user Default –Accessrights None}

Note : Copy the Code into Notepad . Save As  .ps1 file and Locate the File in Exchange management Shell to execute it

How to Add a Calendar Permission Over a Maibox ?

Add-MailboxFolderPermission [email protected]:calendar -User Calendar-Admins -AccessRights reviewer

Note : You can Create a Universal Security Group – Mail Enable it – And You can add it

So that all the members of the security group and view this calendar

To Add a User or Security Group in Bulk over all the mailboxes in the Organization

$allmailbox = Get-Mailbox -Resultsize Unlimited

Foreach ($Mailbox in $allmailbox)

{Add-mailboxfolderpermission –identity ($Mailbox.alias+’:calendar’) –user Calendar-Admins –Accessrights Reviewer}

To Remove a User or Security Group from all the mailboxes in the Organization

$allmailbox = Get-Mailbox -Resultsize Unlimited

Foreach ($Mailbox in $allmailbox)

{remove-mailboxfolderpermission –identity ($Mailbox.alias+’:calendar’) –user Calendar-Admins }