CalendarPlus for Outlook is a special app that makes it quick and easy for Mac users to open the Outlook calendar while using their Mac. The calendar itself comes with a large number of useful features that help users to keep track of appointments and tasks as well as to share information with their contacts. The Top Outlook Calendar Integration is Microsoft Excel. This long-favored spreadsheet program is. Show only the event data you want with powerful configuration options and a familiar office calendar interface. Seamlessly add SharePoint calendar to Outlook. Unified Calendar. When you add a calendar to SharePoint. You can combine and edit team calendars, holidays. Calendar + is a free, easy to use professional schedule planner that helps manage business events and programs from one planning app. Customize your schedule in one easy event planner.

Subscribe to a Calendar in Outlook

To stay informed with the happenings of your community group or sport club, you can subscribe to an internet calendar in Outlook. This will allow you to keep up with the schedule, but also any changes that happen to the calendar. Simply importing calendar entries will not accomplish the task.

Don't Import Your Calendar

Importing a calendar via an .ics file, for example, will most certainly give you the meetings in your calendar. However, if the creator of the calendar makes changes to the meetings in the calendar, you will not receive the updates.

Outlook Makes Subscribing Easy

Outlook provides a easy method of subscribing to a properly published internet calendar. To learn how to publish an internet calendar properly in Outlook, check out my blog post and video. Hint: Outlook doesn't make publishing an internet calendar easy!

Follow along with the video below to add published internet calendars. The demo shows how I published the scheduling calendar for Office 365 Nashville 2020.

Also published on Medium.

Original KB number: 4025591

Symptoms

You try to add an Internet calendar in Microsoft Outlook 2016, Outlook 2019, or Outlook for Office 365 by following these steps:

1. Switch to the calendar module.
2. In the Manage Calendars group on the toolbar, select Open Calendar.
3. Select the From Internet option.
4. Provide the path of your Internet calendar file.
5. Select OK.

When you use this method for some Internet servers, the calendar is not added successfully. After a progress window opens briefly, you are returned to the calendar module without a new calendar added. Additionally, you don't receive any error message.

Cause

By default, Outlook 2016, Outlook 2019, and Outlook for Office 365 use a new modern authentication stack. Even if the Internet calendar file that you are trying to open does not require authentication, Outlook broadcasts its ability to do modern authentication on the server that contains the calendar. Most server software responds to this broadcast by supporting modern authentication. However, some servers consider the broadcast to be an invalid client request. Therefore, they return a response that causes Outlook to cancel the attempt to add the calendar.

For example, server software that's running on Amazon Web Services (AWS) may consider the authentication broadcast to be invalid and refuse the connection.

Workaround

To work around this issue, use Outlook Web App (OWA). OWA doesn't have this authentication header behavior. Therefore, it will successfully open the Internet calendar that you want to add.

To use OWA to add the calendar, follow these steps:

1. Sign in to OWA.
2. Switch to the Calendar module.
3. Select the Add calendar menu.
4. Select the From internet option.
5. Provide the URL and an optional calendar name.
6. Select Save.

My Calendars In Outlook

More information

When you add the Internet calendar by using OWA, the server that's running Exchange Server manages the calendar subscription and updates. Calendar updates sync approximately every four hours.

The calendar that's added from OWA does not appear in the Outlook desktop application as an Internet calendar. Instead, it is displayed as a calendar entry in the Other Calendars group. Because no subscription information is handled or controlled by the Outlook desktop application, you don't have to configure any client-side Internet calendar options for the calendar that's added through OWA.

Calendar Plus For Outlook Email

Third-party contact disclaimer

Using Calendars Outlook

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