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Public folder permissions in Exchange admin center show GUID instead of name

  • Applies to: Exchange Online

When you view the list of users in a public folder permissions window in the Exchange Online admin center (EAC), you notice that some users are identified by a GUID in the Name field.

The following example shows a GUID in the Name field of a public folder permissions window.

Screenshot of a public folder permissions window that shows a GUID in the Name field.

Cause

To ensure the uniqueness of new recipient objects that are synced from Microsoft Entra ID, Exchange Online replaces the object Name property value with the object ExternalDirectoryObjectId (EDOID) property value. New recipient objects include mailboxes, users, groups, and contacts. For more information, see Change in naming convention of user's Name parameter.

Workaround

To get the names of users who are identified by a GUID in an EAC public folder permissions window, use one of the following methods.

Method 1: Use Exchange Online PowerShell

  1. Connect to Exchange Online PowerShell.

  2. Use the Get-PublicFolderClientPermission cmdlet to get the names of users:

    Get-PublicFolderClientPermission -Identity "<public folder name>" | Format-List User,AccessRights

    For example, the Get-PublicFolderClientPermission -Identity "\Public Folder 1" | Format-List User,AccessRights command might generate the following output:

    User : Default
AccessRights : {Author}
User : Anonymous
AccessRights : {None}
User : mina.amiri
AccessRights : {PublishingEditor}
User : dakota.sanchez
AccessRights : {Owner}

Method 2: Use the Outlook client

Open the properties window for a public folder, and then select the Permissions tab to view the names of users. The following screenshot shows an example of the Permissions tab for a public folder.

Screenshot of a public folder properties window that displays the names of users.