Default Calendar permissions for all users

Is there a way to:

A) bulk update all mailbox calendars so all users in the organisation can view them without requesting sharing.
B) change the default to do this.

We're running Exchange 2013 SP1 CU9.
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Nadav SolomonCommented:
Change the default sharing policy under organization configuration, mailbox, sharing policies.
Will SzymkowskiSenior Solution ArchitectCommented:
Yes you can do this vary easily.

One liner for a single user
Set-MailboxFolderPermission -Identity user1:\calendar -User Default -AccessRights Reviewer

Open in new window

Apply to all mailboxes
$mailboxes = get-mailbox -resultsize "unlimited"
ForEach ($mailbox in $mailboxes)

        Set-MailboxFolderPermission -identity $Mailbox":\calendar" -User Default -AccessRights Reviewer

Open in new window

Also see one of my PAQ


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Nadav SolomonCommented:
just bare in mind that using ps script will not apply automatically to future created users.
Will SzymkowskiSenior Solution ArchitectCommented:
Setting up a scheduled task would suffice this for new users.

It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.