How to grant Reviewer Access to a User Group for an O365 Shared Mailbox

Laurie Fulk 0

I am trying to create a company Shared Calendar where all users have "Reviewer" access to it and then a select group of users will have edit access to said calendar.

To do this I have created a Shared Mailbox.

We were able to assign a single user "reviewer" access via powershell but doing that for another 300+ users and then every user we onboard after that will be quite cumbersome.

Does anyone know of a way to assign the "reviewer" permission via a security group?

Not sure why Microsoft makes it so difficult to create a company-wide shared calendar that works in outlook with more modified permissions.

1 answer

Vasil Michev 99,351 Reputation points MVP

2024-03-08T00:34:38.7033333+00:00
Use the "Default" built-in security principal. Adjusting the permissions on the Default entry will affect every user within the company, unless they have additional (more targeted) permission entries added. Here's an example:

Set-MailboxFolderPermission shared@domain.com:\Calendar -User Default -AccessRights Reviewer
Please sign in to rate this answer.
JimmyYang-MSFT 50,111 Reputation points Microsoft Vendor

2024-03-08T07:50:36.4266667+00:00

@Laurie Fulk You can use the below command to assign "Reviewer" permission on the Inbox of shared mailbox to the users.

First command to give access on the Top level folder and the second to give to Inbox.

Add-MailboxFolderPermission -Identity Sharedmailbox:\ -User UserName -AccessRights Reviewer

Add-MailboxFolderPermission -Identity Sharedmailbox:\Inbox -User UserName -AccessRights Reviewer

Once done, users can add the shared mailbox to their outlook profile using File-> Account Settings -> advanced -> Add shared mailbox and view only the Inbox.

Create a CSV file with user alias like below and save it as users.csv

use the commands,

Import-Csv users.csv | foreach { Add-MailboxFolderPermission -Identity "SharedMailbox:" -User $_.alias -AccessRights Reviewer}

Import-Csv users.csv | foreach { Add-MailboxFolderPermission -Identity "SharedMailbox:\Inbox" -User $_.alias -AccessRights Reviewer}

Laurie Fulk 0 Reputation points

2024-03-08T13:18:17.4666667+00:00

I'll try this one out. Too bad Microsoft wont let us add User Groups for this.

JimmyYang-MSFT 50,111 Reputation points Microsoft Vendor

2024-03-20T09:54:50.2966667+00:00

@Laurie Fulk

It has been a while, how is everything going?

If you have any update about this issue, please feel free to post back.

Little, Jim 0 Reputation points

2024-06-07T14:42:39.8733333+00:00

@Laurie Fulk If you create a mail-enabled security group, you can use that to assign the permissions using the -User switch for Add-MailboxFolderPermission. This way, when you add or remove users from that mailbox-enabled security group, the permissions will follow the group and you will not need to run these commands each time a user enters/exits the company or department.
Sign in to comment

Share via

How to grant Reviewer Access to a User Group for an O365 Shared Mailbox

1 answer