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Exchange 2016 issue or Outlook Client

Bigwil4555 101 Reputation points
2021-10-01T20:02:40.897+00:00

Folks, we want "all" our employees Calendars to be "readable with details" between each other. I pushed out a power shell script that changed all the Default Calendar permissions to Reviewer. The problem we're still having is when I open another person's Calendar and I click on any of their meetings I get a message saying I don't have permission to view "person's name" Calendar, would you like to ask for permission. I don't want to have to ask for permission and I don't want the users to be able to change this using Outlook Calendar Permissions. Is this doable or does Outlook Calendar Permissions override Reviewer permissions set by the server?

Outlook | Windows | Classic Outlook for Windows | For business
Exchange | Exchange Server | Management
Exchange | Exchange Server | Management

The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.

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  1. Jade Liang-MSFT 9,991 Reputation points Microsoft Employee
    2021-10-04T05:25:43.96+00:00

    Hi @Bigwil4555 ,

    does Outlook Calendar Permissions override Reviewer permissions set by the server?

    Yes, the calendar owner could re-change the calendar permission in Outlook client even if we changed the default permission via "Set-MailboxFolderPermission" cmdlet.

    If you don't want the users to change permission in Outlook, as a workaround, we could try to disable the permission option in Outlook by GPO like below, please note : after deploy this setting, users couldn't grant any permission of all folders manually in Outlook client, but they still could change permission in owa:
    137311-image.png

    If it could meet your need, please try to add this registry value on your client for testing and then deploy it in your organization for your need(Note: Serious problems can occur if you modify the registry incorrectly. Before making changes, back up the registry to restore it in case something goes wrong.):

    Registry Path: HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\options\folders
    Value Name: disableeditpermissions
    Value Type: REG_DWORD
    Enabled Value: 1

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