How to Subscribe to an Internet Calendar in Outlook

Subscribing to an internet calendar adds someone else's schedule—a team roster, a holiday list, a sports season—to Outlook by URL, and keeps it refreshing on its own. That's different from importing an .ics file, which copies events in once and never updates. This guide walks through subscribing across new Outlook, the web, and classic desktop, and clarifies when to subscribe versus import.

	Subscribe to a URL	Import a file
Source	A web link ending in `.ics`	A downloaded `.ics` file
Updates	Refreshes automatically (on a delay)	One-time snapshot, never changes
Best for	Feeds that change—schedules, holidays	A fixed list added once
Where in Outlook	Add calendar → Subscribe from web	Add calendar → Upload from file

If the source will ever change, subscribe. If it's a static list, importing is fine—see How to Import an .ics File Into Outlook.

Get the calendar's URL first

You need a link that ends in .ics (sometimes called a feed, iCal, or webcal URL). Where it comes from:

A team or service that publishes a public calendar.
Another Outlook calendar's published feed—see How to Get Your Outlook Calendar's Published .ics URL.
A holiday or sports provider's "subscribe" link.

If the link starts with webcal://, it usually still works; some versions prefer you swap it for https://.

New Outlook for Windows and Outlook on the web

New Outlook and Outlook on the web (outlook.office.com or outlook.com) share these steps.

Open the Calendar.
In the left pane, select Add calendar.
Choose Subscribe from web.
Paste the .ics URL into the field.
Give the calendar a name, pick a color and a charm/icon if offered.
Choose which calendar group to add it under, then select Import / Subscribe.

The calendar appears in your list and refreshes periodically on Microsoft's schedule.

Classic Outlook desktop

On the Home ribbon, select Open Calendar → From Internet.
Paste the .ics feed URL and select OK.
When prompted, select Yes to add the subscription. For some feeds, choosing Advanced lets you set a name and enable update downloads.

The subscribed calendar shows up under Other Calendars and updates over time.

Mobile

The Outlook mobile app doesn't offer a "subscribe by URL" control. Subscribe on the web or desktop instead, and the subscribed calendar will sync down to your phone automatically once it's attached to your account.

How often it updates

Subscriptions are not real-time. Outlook polls the feed on a delay—often a few hours—so a change at the source can take a while to appear. This is normal and not something you can force much faster from within Outlook.

Troubleshooting

The URL won't subscribe. Confirm it ends in .ics and is a feed, not an HTML calendar web page.
Events appear but never change. You may have imported a file instead of subscribing. Remove it and use Subscribe from web.
Subscribed calendar looks stale. Give it time; feeds refresh on a delay, not instantly.
Can't remove it. Right-click the calendar in your list and choose Remove / Unsubscribe.

If you're following several internet calendars at once, nocal pulls your Outlook and Google calendars into a single timeline so you're not hopping between feeds — see how to connect them.

Subscribe vs. import