Outlook Calendar Permission Level ‘None’ But Item Visible: Delegate Conflict

You set a user’s calendar permission to None in Outlook, yet that person still sees your private appointments and meetings. This problem occurs because Outlook delegates override explicit folder permissions. When someone is a delegate on your mailbox, they inherit visibility to your calendar items regardless of the permission level you assign. This article explains why delegate access bypasses standard calendar permissions and provides the exact steps to revoke visibility from a delegate without removing all their access.

Why the Calendar Permission Level None Still Shows Items

Outlook uses two separate permission systems for a shared calendar: folder permissions and delegate permissions. Folder permissions, set via Calendar Properties > Permissions, control what a user can see and do in that specific folder. Delegate permissions, set via File > Account Settings > Delegate Access, grant the delegate the ability to send and respond to meeting requests on your behalf.

When a user is added as a delegate, Outlook automatically gives them Editor or Author access to your calendar folder, depending on the delegate options you choose. Changing the folder permission to None does not remove the delegate-level access. The delegate permission layer sits above the folder permission layer. The delegate still sees calendar items because the delegate access is still active.

This design exists so that delegates can manage your calendar without interruption. If you change a folder permission to None while the user remains a delegate, Outlook ignores the folder permission for that user. The user continues to see all calendar items, including those marked Private.

How Delegate Access Works

When you add a delegate in Outlook, you grant them permission to view and manage your calendar. The delegate receives a copy of your meeting requests and can accept or decline them. Outlook automatically assigns the delegate a folder permission level of Editor or Author. This automatic assignment cannot be removed by changing the folder permission alone. You must first remove the user from the Delegate Access list.

How Folder Permissions Work

Folder permissions on a calendar control what a user can do when they open that specific calendar. The permission levels range from None to Owner. Setting None should block the user from seeing any items. But if the user is a delegate, the delegate permission overrides the folder permission. The user sees the calendar items because the delegate access is still active.

Steps to Remove Delegate Access and Apply None Permission

Follow these steps to stop a delegate from seeing your calendar items while keeping other access options available.

1. Open Delegate Access settings
   In Outlook, go to File > Account Settings > Delegate Access. A dialog box opens showing all current delegates and their permissions.
2. Select the delegate
   Click the name of the delegate who should no longer see your calendar.
3. Remove the delegate
   Click the Remove button. A confirmation message appears. Click OK. The user is no longer a delegate.
4. Set folder permission to None
   Right-click your calendar folder in the folder pane. Select Properties > Permissions. In the list of users, select the same user. In the Permission Level dropdown, choose None. Click Apply > OK.
5. Verify the change
   Ask the user to open your calendar. They should see no items or receive a message that they have no permission to view the calendar.

Alternative: Keep the Delegate but Limit Private Items

If you want to keep a delegate but hide private items, you can configure Outlook to hide private appointments from delegates.

1. Open Delegate Access settings
   Go to File > Account Settings > Delegate Access.
2. Change delegate permissions
   Select the delegate name and click Permissions. In the Calendar section, check the box labeled Delegate can see my private items. Uncheck this box. Click OK.
3. Mark items as Private
   For each appointment or meeting you want hidden, open the item and click the Private button in the Tags group on the Appointment or Meeting tab.

If Outlook Still Shows Calendar Items After Removing Delegate

Outlook Cached Exchange Mode Delays Permission Changes

When you change permissions, Outlook may take up to 15 minutes to sync the change if Cached Exchange Mode is enabled. Force a sync by pressing F9 or by restarting Outlook. The user should also restart Outlook or press F9 to refresh their folder list.

Permissions Inherited from Parent Folders

If the user still sees items after the delegate is removed, check if they have permission to the parent mailbox folder. In Outlook, right-click the mailbox root (your name at the top of the folder pane) and select Properties > Permissions. If the user appears there, set their permission level to None. This prevents inheritance of mailbox-level permissions down to the calendar folder.

Outlook Web App Permissions Not Synced

If you manage permissions in Outlook Web App and the desktop client, the two may conflict. Use only one method to set permissions. To check OWA permissions, sign in to Outlook Web App, go to Settings > View all Outlook settings > Calendar > Shared calendars. Remove any delegate or permission entry for the user from this page.

Delegate Access vs Folder Permissions: Key Differences

Item	Delegate Access	Folder Permissions
Purpose	Manage meeting requests and send on behalf of the mailbox owner	Control read and write access to a specific folder
Permission levels	Editor, Author, Reviewer	None, Reviewer, Contributor, Editor, Publishing Editor, Owner
Overrides folder permission	Yes, delegate permission overrides folder permission for the same user	No, folder permission is ignored for delegates
Private item visibility	Can be toggled on or off for each delegate	Private items are always hidden unless permission level is Owner
Where to configure	File > Account Settings > Delegate Access	Right-click folder > Properties > Permissions

Delegate access is designed for users who need to manage your calendar on your behalf. Folder permissions are designed for users who only need to view or edit specific folders. If a user needs both, use delegate access and adjust the private item visibility setting instead of mixing both permission systems.

After removing the delegate and setting the folder permission to None, the user will no longer see your calendar items. If you later need to grant them access again, add them as a delegate or set folder permissions, but not both. For users who only need to view free or busy information, use folder permissions with the Free/Busy permission level in Outlook Web App settings rather than delegate access.