• How To Share Outlook Calendar 365
• Creating New Shared Calendar On Outlook

Calendar should find and automatically configure your account. In the Account Summary dialog box, click Continue. Select the apps you would like to use this account. In this case, you will want to select Calendar. You have now successfully added your Office 365 calendar to your Mac Calendar! Was an interesting one. Note in Office 365 and Exchange server calendar permissions doesn’t reflect instantly on Microsoft Outlook. Outlook Web App will take minimal time to Reflect. Lets see how to go about it and achieve the same. Lets create a Shared Mailbox. (Lets utilize the default calendar within the shared mailbox.).

This is how I normally create a company-wide Shared Calendar in Office 365:

1. Outlook 2016 for Mac integrates with a variety of different email clients, including Exchange, Office 365, Outlook.com, Hotmail, iCloud, Google, and Yahoo! This means that when you add all of your email accounts to Outlook, you can compose new messages and read and respond to email messages from one application—no need to open multiple email.
2. On the Organize tab, click Open Shared Calendar. Note: If the Open Shared Calendar or Calendar Permissions buttons are unavailable, you might need to change one of your settings. See You cannot open a shared calendar in Outlook 2016 for Mac for instructions. Adding a shared calendar in Outlook (macOS) Open your Calendar in Outlook.
3. How to add notes to a matter. Office 365 Integration (Outlook Email, Calendaring, Word and Powerpoint) 10 Things to know before syncing your Office 365 contacts and calendar. How to get started with the Office 365 Integration. How to enable Contact Sync with Office 365. How to enable Calendar Sync with Office 365 Outlook.

• Exchange Admin Center > Recipients > Shared
  • Create a new Shared Account
  • Edit account's properties and in Mailbox Delegation tab add All Users group to Full Access list.

This will give your users permission to add shared calendar to their MS Outlook and Outlook Web App. If you want the shared account (including Calendar) to be added automatically to users' Outlook, add individual users (rather than All Users group) to Mailbox Delegation > Full Access.

If all of your users are on Windows machines that's pretty much it. Unfortunately things are not so simple if they are on MacOS and iOS. I tried to get help from Office 365 support, but received a not very helpful 'we don't support Apple products' or something similar... Luckily after some Googling and bunch of trial and error I finally got it working. Here is what I did:

• Exchange Admin Center > Recipients > Shared. Edit your shared account's Mailbox Delegation add the Mac/iOS user(s) to Full Access and Send As lists.
• Open Outlook Web App, login as the user above and then open the Shared mailbox account (click on user's name in top right corner and select Open Another Mailbox)
• Switch to the Calendar view, click Share in the top bar and share the Calendar with the user giving Can Edit permission.
  If you didn't give the user Send As permission you will get 'The sharing invitation couldn't be sent' error.
• Go back user's mailbox and click Accept in the Calendar Sharing invitation he/she just received.
  

How To Share Outlook Calendar 365

That should be it. iOS users should automatically see shared calendar in the calendars list for their Exchange account. MacOS users need to go to Calendar > Preferences > Accounts and add the shared account inside the Delegation tab list.

Creating New Shared Calendar On Outlook

November 2017
Office 365
Mac OS Sierra (10.12)
iOS 11.1