Calendar sharing is only available for people within your organization. To make a calendar available to people outside the organization, you can use "Publish a calendar" feature. External users can view and subscribe to the calendar, however they are not able to edit it. 

Important:

  • By default, you can only choose Availability Only for publishing. Contact Support to enable other options (Limited Details or Full Details) if necessary.
  • Publishing calendar with Editor permission level is restricted due to the nature of the shared hosted environment.
  • Publishing Public Folder calendar is not supported.
  • The functionality is available for Exchange 2013/2016/2019 accounts.

If you want to share a calendar with internal uses, please follow the isntructions in this Kowledge Base Article:
How Do I Share (Let Others See) My Outlook Folders (Inbox, Contacts, Calendar etc.)?

Note: Calendar publishing is not available in Outlook for Mac. Use OWA instead.

Outlook/OWA 2013

In order to publish your calendar to the Internet using Outlook 2013 you may follow these steps:

  1. Navigate to the Calendars section of your Outlook > right-click the calendar you want to publish > Share > Publish This Calendar...
    Publish Calendar
  2. Enter you email address and password and click Sign In.
    Publish Calendar
  3. Choose desired options and click Start Publishing.
    • Publishing detail:
      Availability Only shows Free, Busy, Tentative, or Away.
      Limited Details also shows subjects of meetings.
      Full Details shows all details.
      Note: by default, you can only choose Availability Only. Contact Support to enable other options if necessary. Publishing calendar with Editor permission level is restricted due to the nature of the shared hosted environment.
    • Access Level:
      Restricted: people only have access if they receive a link to your published calendar.
      Public: people can search for this calendar on the Internet. Choose this option only if you want your calendar to be available to anyone.
      Publish Calendar
  4. Copy links to share with your colleagues or other parties and click Save to start publishing.
    Publish Calendar
  5. To make sure calendar was published successfully: put the Link for viewing a calendar in a Web browser into another tab or window of your browser and verify it's accessible. Close windows when done.

To change publishing settings or stop publishing your calendar:

  1. Navigate to the Calendars section of your Outlook > right-click the calendar you want to change settings for > Share > Configure This Published Calendar...
    Publish Calendar
  2. Enter you email address and password and click Sign In.
    Publish Calendar
  3. Update settings and click Save or click Stop Publishing.
    Stop Publishing

Outlook/OWA 2016/2019

In order to publish your calendar to the Internet using Outlook 2016/2019 you may follow these steps:

  1. Navigate to the Calendars section of your Outlook > right-click the calendar you want to publish > Share > Publish This Calendar...
    Publish Calendar
  2. Enter you email address and password and click Sign In.
    Publish Calendar
  3. Choose desired permissions and click Save button.

    Select permissions:
    Availability Only shows Free, Busy, Tentative, or Away.
    Limited Details also shows subjects of meetings.
    Full Details shows all details.
    Note: by default, you can only choose Availability Only. Contact Support to enable other options if necessary. Publishing calendar with Editor permission level is restricted due to the nature of the shared hosted environment.
    Publish Calendar

  4. Copy links to share with your colleagues or other parties.
    Publish Calendar
  5. To make sure calendar was published successfully: put the Link for viewing a calendar in a Web browser into another tab or window of your browser and verify it's accessible. Close windows when done.

To change publishing settings or stop publishing your calendar:

  1. Navigate to the Calendars section of your Outlook > right-click the calendar you want to change settings for > Share > Configure This Published Calendar...
    Publish Calendar
  2. Enter you email address and password and click Sign In.
    Publish Calendar
  3. Update settings and click Save button.
    Stop Publishing