How to Add/Remove Calendar & Contacts permission’s for Office 365 User’s via PowerShell
Managing permissions on Office 365
Hello everyone! Today I will be discussing how to add, and remove, contacts and calendars permissions for users of Office 365 by using PowerShell. This can be useful should you have trouble trying to add permissions over Outlook.
Note: There is an open source tool called CIPP which makes managing multiple tenants much easier including calendar permissions. Check it out here: https://cipp.app/
The first you need to connect to the Office 365 Exchange Powershell, open a Powershell session and enter these commands, providing your Office 365 admin account details when requested:
$cred = Get-Credential
$session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell/ -Credential $cred -Authentication Basic –AllowRedirection
Now you can get on with the adding and removing user permissions.
Check current permissions in Office 365
Before you start adding permissions, check if there are any existing permissions on the folder first. If a user already has permissions for another user’s contacts/calendar folder then you won’t be able to change them until the permissions are removed. To do this, type in the following code:
Get-MailboxFolderPermission -Identity [email protected]:\Calendar| Select User, AccessRights, Deny
Change [email protected] with which ever user you want to view. Also Calendar can be changed for Contacts if you want to view who has access to the contacts folder.
Add Permissions in Office 365
Now that you know the permissions for the folder, you can start adding and removing. First we shall look at adding permissions. Before adding permissions for a user, decide which permission you would like to give them. Below are the options:
- Create, read, modify, and delete all items and files, and create subfolders. As the folder owner, you can change the permission levels others have for the folder. (Does not apply to delegates.)
- Publishing Editor
- Create, read, modify, and delete all items and files, and create subfolders.
- Create, read, modify, and delete all items and files.
- Publishing Author
- Create and read items and files, create subfolders, and modify and delete items and files you create.
- Create and read items and files, and modify and delete items and files you create.
- Create items and files only. The contents of the folder do not appear.
- Read items and files only
- Perform activities defined by the folder owner.
- You have no permission’s. You can’t open the folder.
Once you’ve chosen the permissions you wish to give the user you can add the permissions using PowerShell. Use to following code to do this:
Add-MailboxFolderPermission -Identity [email protected]:\Calendar -AccessRights [Permission goes here] -User [email protected]
Replace the [email protected] with the mailbox you want to add permissions to and [email protected] to the mailbox you want to have access. Also change [Permission goes here] to whatever permission you wish to use from the list above.
Remove Permissions in Office 365
Lastly, if you want to remove some permissions then you can use this line of code:
Remove-MailboxFolderPermission -Identity [email protected]:\Calendar -User [email protected]
I hope this has helped you. Thanks for reading!
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