Use Delegate Calendar Access in New Outlook After Switching From Classic Outlook

When you switch from Classic Outlook to the new Outlook for Windows, delegate calendar access often stops working. The permissions you set up in the classic version do not automatically carry over to the new app. This article explains why delegate access breaks after the switch and provides step-by-step instructions to restore it in the new Outlook.

Why Delegate Calendar Access Breaks When Switching to New Outlook

Classic Outlook stores delegate permissions in the Exchange mailbox using a legacy MAPI profile. The new Outlook for Windows uses a different sync engine and a simplified permission model. When you install the new Outlook, it creates a new profile that does not read the old delegate settings. The delegate relationships you configured in Classic Outlook remain on the Exchange server, but the new Outlook does not display them or enforce them until you re-add each delegate through its own interface.

Prerequisites Before Setting Up Delegates in New Outlook

Before you add a delegate, confirm the following:
– You are using a Microsoft 365, Exchange Online, or on-premises Exchange account. Delegates are not supported on POP or IMAP accounts.
– You have full access to the mailbox and calendar you want to share.
– The delegate has a valid Exchange mailbox in the same organization.
– You are running the latest version of the new Outlook for Windows. Check for updates under File > Office Account > Update Options.

Steps to Add a Calendar Delegate in New Outlook

1. Open Settings
   Click the gear icon in the top-right corner of the new Outlook window. Select Mail from the left panel, then click Delegates & Access.
2. Add a delegate
   Click Add delegate. In the search box, type the name or email address of the person you want to add. Select the correct contact and click Add.
3. Set calendar permissions
   After adding the delegate, locate their name in the list. Click the dropdown under Calendar permissions and select Editor. Editor allows the delegate to create, read, modify, and delete calendar items and respond to meeting requests on your behalf.
4. Configure meeting request handling
   Below the permissions list, check the box labeled Send meeting-related messages to delegates only. This prevents you from receiving copies of meeting requests that the delegate processes. Uncheck this box if you want to receive copies as well.
5. Apply the changes
   Click Save at the bottom of the Delegates & Access page. The new Outlook will apply the permissions immediately. Ask the delegate to close and reopen their Outlook to see your shared calendar.

How a Delegate Opens Your Shared Calendar

1. Open the calendar view
   In the new Outlook, click the Calendar icon in the left navigation bar.
2. Add a shared calendar
   Right-click Other calendars in the left pane and select Add calendar. Choose From directory, type your name or email, and click Add. The calendar appears in the delegate’s calendar list.
3. Confirm permission level
   If the delegate sees the calendar but cannot edit items, return to your Delegates & Access settings and verify that Editor permission is selected. Permissions changes take effect after the delegate refreshes their calendar by pressing F5 or closing and reopening Outlook.

If Delegate Access Still Does Not Work After Setup

Delegate cannot see my calendar at all

Open the Delegates & Access page in your new Outlook. Verify that the delegate is listed and that Calendar permissions is not set to None. If it is set to None, change it to Editor or Reviewer and click Save. The delegate must then remove and re-add your calendar using the From directory option.

Delegate can see but cannot edit calendar items

Change the Calendar permissions dropdown from Reviewer to Editor. Reviewer only allows read access. Editor grants full create, edit, and delete rights. After saving, the delegate must refresh their calendar view by pressing F5.

Meeting requests sent to me instead of the delegate

Go to Settings > Mail > Delegates & Access. Under the delegate’s name, check the box Send meeting-related messages to delegates only. This routes all meeting requests to the delegate. If you still receive requests, ask the delegate to verify that your calendar is added and that they have Editor permissions.

Delegate permissions revert after restarting Outlook

This can happen if the new Outlook is still syncing with the Exchange server. Wait 15 minutes after saving permissions, then restart both Outlook clients. If the problem continues, remove the delegate from the list, click Save, add the delegate again, and click Save. This forces a fresh permission push to the server.

Item	Classic Outlook	New Outlook
Delegate setup location	File > Account Settings > Delegate Access	Settings > Mail > Delegates & Access
Permission granularity	Separate settings for Calendar, Tasks, Inbox, and Notes	Calendar-only permissions; Inbox and Tasks sharing handled separately via Share
Meeting request routing	Configured in the Delegate Access dialog under Calendar tab	Single checkbox: Send meeting-related messages to delegates only
Profile dependency	Permissions stored in the MAPI profile on the local machine	Permissions stored on Exchange server; no local profile
Delegate calendar visibility	Auto-maps to delegate’s Outlook after setup	Delegate must manually add the calendar via Add calendar > From directory

You can now set up delegate calendar access in the new Outlook after switching from Classic Outlook. Test the setup by asking your delegate to open your calendar and create a test meeting. If you manage multiple delegates, repeat the steps for each person. For advanced scenarios, explore the Sharing feature in Settings > Calendar > Shared calendars to grant read-only access to users who do not need delegate-level permissions.