PRB: ACL: Outlook 2000 Doesn't Properly Read ACL Settings

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When you try to open the Calendar folder, where the permissions have been set using the ACL object with Microsoft Outlook 2000, the following error will appear:
"Unable to display folder".
Access to another user's calendar requires that you also have corresponding permissions to the users FreeBusy Data folder. To resolve this problem, you can use the ACL object to also set permissions on the FreeBusy Data folder. This folder is located at the root of the Microsoft Exchange Server mailbox and does not display in the Outlook client. If you grant read-only access to the calendar, set the same access level to the FreeBusy Data folder. If you grant write access to the calendar, you must grant editor-level permissions to the FreeBusy Data folder.

You can now access the Calendar folder with Outlook 2000 without an error.
More information

Steps to Reproduce Behavior

  1. Register the ACL.dll from the Platform SDK on the computer that you are going to use to run the code that sets the permissions.
  2. Create a new Microsoft Visual Basic project.
  3. Add a reference to both "Microsoft Exchange 5.5 ACL Type Library 1.0" and "Microsoft CDO 1.21 library."
  4. Cut and paste the following code to the project:
    Dim strMailbox, As StringDim strServer As StringDim objFolder As FolderDim objacls As ACLObjectDim myAce As ACEDim objFolderAces As ObjectDim CDOSession As SessionDim objstore As InfoStoreSub Main()        '        'This code depends on a reference to CDO (1.1, 1.2, or 1.21)        '                     Set CDOSession = CreateObject("MAPI.Session")        strServer = "<Server Name>"        strMailbox = "<Mailbox Name>"        CDOSession.Logon "", "", True, True, 0, True, strServer & vbLf & strMailbox        Set objstore = CDOSession.GetInfoStore()        Set objFolder = objstore.RootFolder.Folders("Calendar")            ' get the aclsobject for the folder        Set objacls = CreateObject("MSExchange.aclobject")        Set objacls.CDOItem = objFolder  ' set the CDO folder to CDOItem        Set objFolderAces = objacls.ACEs ' get ACEs for folder                For Each myAce In objFolderAces            If myAce.ID = "ID_ACL_DEFAULT" Then                myAce.Rights = ROLE_OWNER                objacls.Update            End If        Next        'Clean up        Set objstore = Nothing        Set objFolder = Nothing        Set objacls = Nothing        Set objFolderAces = Nothing                'Logoff Session        CDOSession.Logoff        Set CDOSession = NothingEnd Sub					
  5. Run the code against an Exchange mailbox. The code will change the permissions of "Default" to "Owner" on the Calendar folder.
  6. Try to access the Calendar folder from Microsoft Outlook 2000 (Go to the File/Open/Other User's Folders).


You will receive the following error:
"Unable to display folder"
ACL Object

Article ID: 237924 - Last Review: 01/11/2015 03:01:35 - Revision: 5.0

Microsoft Outlook 2000 Standard Edition

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