We have noticed that some of our calendar permission have been changed to availability  Only.
These are for calendar permissions, that have previously been set up by uses, through the outlook 2010

The access rights granted would have been editor, owner or reviewer or something

Are we aware of any issues, with exchange changing calendar permissions to availability only?

Is there any way i can run a PS command to get a list of all users/ mailboxes who have availability only access to a calendar,

so that i can see a list of all the users with availability only access?

The default access right policy setting is "reviewer". However for the people who have special access ie owner, editor ect...

and have been manual changed, they have been changed to availability only

we are running a exch 2010 environment

and not scripts have been ran to change this

thanks in advance

• Edited by Riley00008888 Friday, March 13, 2015 2:27 PM

Set auditing on the affected mailboxes, it should help you better understand what's happening.

To get all users with access to someone's calendar with Availability only, use this:

Get-MailboxFolderPermission user:\calendar | ? {$_.AccessRights -eq "AvailabilityOnly"}

And if you want to do this in bulk:

$calendars = Get-Mailbox -RecipientTypeDetails UserMailbox | Get-MailboxFolderStatistics | ? {$_.FolderType -eq "Calendar"} | select @{n="Identity"; e={$_.Identity.Replace("\",":\")}}

$calendars | % {Get-MailboxFolderPermission -Identity $_.Identity | ? {$_.AccessRights -eq "AvailabilityOnly" -and $_.User.DisplayName -ne "Default" }} | select Identity,User,AccessRights