Shared outlook calendars not visible on macbook, but appear in iphone

I was having the exact same problem. But I got it to work. I entered the email address of the owner of the calendar in the delegation preferences. First I pasted the email address in and this didn't work - user not found. Then I started typing the address in and the user I wanted was suggested in a pop-up menu. I selected the user and they then appeared under a Delegate tab in the Calendar side bar. But none of their calendar appointments were visible. I quit Calendar and reopened it. Success! I can now view the appointments!

@DelegatorNH, you identified the issue, thanks! Here's how I got the Exchange Calendar Sharing working on Apple Calendar:

Apple Calendar only sees an Exchange Shared Calendar with the Can View All Details permission:

The User sharing their exchange calendar can fix this:

1. 1. Login to Outlook.com
   2. Click Calendar, then click the 3-dots next to their Calendar, and click Sharing and Permissions
   3. First, set People In My Organization = Can View All Details
   4. If that doesn't work, search for the User you want to share the calendar with, then set the permission to Can View All Details

The Exchange Admin can also fix this:

I worked with Microsoft on this, and we used this Power Shell command to set the "Can View All Details" permission on the user trying to share their calendar:

PS
C:\WINDOWS\system32> Set-MailboxFolderPermission -Identity
SharedCalendarUser@yourdomain.com:\Calendar -User WantstoViewCalendarUser@yourdomain.com -AccessRights Reviewer

None of described solutions worked for me. I can view and edit shared calendar easily on an iPhone or iPad, but there is no way to do it on my MacBook (11.2.2). This must surely be a bug and should be fixed asap.

Hi, please don't pollute this discussion. This has nothing to do with the Outlook client, it has to do with Apple's Calendar client for macOS not showing Outlook shared calendars. I don't use Outlook at all, on any of my devices - I can see outlook shared calendars on my Calendar app on the iPad and iPhone, but I can't see those calendars on my Calendar app on the Mac. This is the original problem that is still unsolved - for help with the actual Outlook client please resort to a Microsoft forum or their customer service.

Since I installed Big Sur, I have the same problem. Tried everything, but still does not work. My Exchange calendar is visible in outlook, on my iPhone, but not on the Mac Calendar. It must be a bug in Big Sur, hope it will be solved soon.

I have been working with both Apple and Microsoft on resolving the issue where shared Exchange calendars show up on iPhones and iPads but not on the MacOS calendar.

After several months of going down different dead end paths, we filed a Microsoft enterprise support ticket and got the response that this is a know problem and this feature is "in development" so my ticket was closed as unresolved. Unfortunately, in my experience, you shouldn't hold your breath for a solution when it is "in development" with Microsoft.

My Apple rep was a lot of help in moving this forward and connecting with the right people at Microsoft to get an anwer. Unfortunately it wasn't the one I wanted to hear.

Hi kelpcathedral,

It sounds like you want to be able to have calendars that have been shared to you, visible on your Mac, do we have that right?

The "See calendar accounts you have access to" section of the following page offers some specific guidance that we expect will offer a solution: Share calendar accounts on Mac

Let us know whether the steps in that article help. If we can assist further, we'll be here for you.

Cheers!

We really appreciate you taking the time to go through the steps we provided, and keep us up to speed with your result. We'd like to work with you to investigate the behavior further, and determine the best way to help you reach a solution.

At your convenience, connect with us here: Contact Apple Support

Hi kelpcathedral,

I think this issue is with the "New Outlook". I can't see my shared calendar when the "New Outlook" is on/enabled but I can see the same when it is turned off.

I am using Outlook Mac client #16.43

As per Microsoft seems 'Shared/Delegated account' is no longer supported with new outlook - https://support.microsoft.com/en-us/office/the-new-outlook-for-mac-6283be54-e74d-434e-babb-b70cefc77439

Hi, I have the exact same problem as well as my team. We can all see Outlook shared calendars on our iOS devices (iPhones and iPads), but we can't see them on our Calendar app on the Macs. We were all on Catalina, and I was just waiting to upgrade to Big Sur to verify this, but after having upgraded just this weekend, I can confirm that I can't access the shared calendars on Big Sur either. Can you please help? I tried accessing the above support link but it shows me a 404. Thanks.

I have encountered the same exact thing I have the new outlook version 16.43 on my Mac with Catalina Version 10.15.7 if I go to the old version of Outlook I can see my shared calendars. I am not able to see them in the new Outlook on my Mac or on outlook on my iPhone.

Hi kelpcathedral,

Other people's calendars were also gone from our outlook calendars when we switched to the "New Outlook"

I just tried something and it seems to have worked for us.

The person who wants to share, the 'sharer' did this:

In the My Calenders list, next to the calendar you wish to share, there are three dots to the right, click on these and under "Sharing Permissions" there is a list of the people with shared access.

The 'sharer' deleted all of the old permissions and added them again.

After the 'sharer' added the sharing permissions, the 'sharie' received an email informing of the new share.

In the email there was a button at the top asking to to accept, after accepting, the shared calendar appeared in the 'sharie's' "People's Calendars" listing.

I hope this works for you too.

I restarted, still the calendars do not appear. I can add the primary calendar of persons however, when searching for them in the Mac Calendar App in the tab "delegates". Now I just miss a calender called "team" which was shared by a person with me. However, I do have any URL for that calendar (Outlook Web Calendar does not show any).

On my iPhone this "Team" calender just appears without the need for any special configuration.

I am using the news Big Sur version.

I have found that for my case, this problem existed when calendars are shared with anything less than "Can View All Details." When somebody shares a calendar with permission of "Can View Titles and Locations" or "Can View When I'm Busy" it doesn't show up in Mac Calendar. But it does show up in the Outlook web client.

So that may be a workaround for what sure seems like a bug. I shouldn't have to share my calendar details with my entire organization for them to see when I'm busy.