Outlook Calendar Missing 2027 Holidays? How to Fix It

You scroll ahead to plan next year and your Outlook calendar goes quiet. Thanksgiving 2026 shows up, but Memorial Day 2027, July 4th, and Christmas 2027 are gone. Nothing broke on your PC. Outlook's built-in holiday list only covers the years 2016 through 2026, and Microsoft hasn't shipped a newer one yet.

The fix is to swap the static holiday set for a calendar Outlook refreshes from the internet. It takes about five minutes, and you only do it once.

Key Takeaways

• Outlook's built-in holidays cover Gregorian calendar years 2016 to 2026, per Microsoft's own "Add holidays to your calendar" support page.
• Microsoft lists "Public holiday calendars missing dates after June 2026" as a known issue with a workaround, not a fix.
• Subscribe to an online holiday calendar instead, then delete the old static holidays to avoid duplicates.

Why Are 2027 Holidays Missing From Your Outlook Calendar?

Classic Outlook adds holidays by copying them out of a local file, not by reading a live feed. Microsoft states on its Add holidays to your calendar in Outlook page: the file covers the years 2016 through 2026, and nothing after.

When you clicked Add Holidays years ago, Outlook wrote each holiday into your calendar as a regular all-day appointment tagged with the Holiday category. Those entries stop at December 2026. No update to Outlook extends them, because the appointments already sit in your mailbox.

Microsoft also published a separate known-issue article, Public Holiday Calendars Missing Dates After June 2026 in Outlook, last updated September 4, 2026. It lists the United States among the affected regions, along with the United Kingdom, India, Germany, Japan, and others. The article covers classic Outlook, new Outlook for Windows, and Outlook on the web, and its status reads "Workaround," not "Fixed."

Which Outlook Versions Are Affected?

All current Windows versions show the problem in some form. Classic Outlook for Microsoft 365, Outlook 2021, Outlook 2019, and Outlook 2016 all rely on the same 2016 to 2026 holiday set.

New Outlook for Windows and Outlook on the web have an Add calendar > Holidays option. Microsoft's known-issue article says some of those holiday calendars also show gaps, so even on the newer apps, check a few 2027 dates after you add one. Movable holidays tied to Easter, along with some regional dates, go missing first. Users on Microsoft Q&A report the same pattern in a thread titled How to get ALL holidays into the Outlook 365 calendar for 2027, where only a few 2027 dates appeared after adding a country calendar.

How Do You Get 2027 US Holidays Back in Outlook?

Subscribe to an online US holiday calendar. A subscribed calendar pulls fresh data from the web on a schedule, so it doesn't run out at the end of a year. Pick the steps for the Outlook version you use.

New Outlook for Windows or Outlook on the web

Start here if you have a Microsoft 365 work account or a personal Outlook.com account. The subscription lives on the server and follows you to every device.

1. Open Calendar from the left bar.
2. Select Add calendar in the pane below the month grid.
3. Choose Holidays and check United States.
4. Click the calendar name in the left pane, then jump to July and November 2027 to confirm the dates appear.

If any 2027 US holidays are missing from Microsoft's list, use a subscription feed instead:

1. Select Add calendar, then Subscribe from web.
2. Paste the ICS link for the calendar you want. Google publishes a public US holidays feed at https://calendar.google.com/calendar/ical/en.usa%23holiday%40group.v.calendar.google.com/public/basic.ics.
3. Name it something clear, such as "US Holidays," pick a color, and select Import.

The first sync takes a few minutes. After it finishes, the calendar appears under Other calendars in the left pane.

Classic Outlook for Windows

Classic Outlook uses a different menu for internet calendars.

1. Switch to Calendar view.
2. On the Home tab, select Add Calendar, then From Internet.
3. Paste the same ICS link and select OK.
4. When Outlook asks whether to add the calendar and subscribe to updates, select Yes.

The new calendar shows up under Other Calendars. Tick its checkbox to overlay it on your main calendar, or right-click it and choose Overlay to merge the views.

One limit to know: a calendar added through From Internet in classic Outlook syncs to the PC where you added it. If you want the holidays on your phone as well, add the subscription in Outlook on the web. Classic Outlook then shows it as a shared calendar on every PC signed in to the same account.

How Do You Remove the Old Duplicate Holidays?

Delete the static holidays Outlook added in the past, then keep only the subscribed calendar. Without this step, you see every 2016 to 2026 holiday twice.

In classic Outlook, follow Microsoft's documented method:

1. Go to Calendar view.
2. Select View > Change View > List.
3. Click the Categories column header to sort by category.
4. Click the first item tagged Holiday, hold Shift, and click the last one.
5. Press Delete.

Check the Location column before you press Delete. Outlook stores the country name there, such as "United States." If you added holidays for more than one country, sort by Location instead and delete only the rows you want gone.

If you tagged your own events with the Holiday category, such as a family vacation, scan the list first. Anything you select gets deleted along with the Microsoft entries.

In new Outlook and Outlook on the web, a holiday calendar added through Add calendar > Holidays appears as its own calendar in the left pane. Right-click it, select Remove, and confirm.

What If You Only Need a Handful of 2027 Dates?

Add them by hand as all-day events. For someone who only cares about paid days off, this takes less time than setting up a subscription.

The US federal holidays for 2027, with the weekday each one falls on:

• New Year's Day: Friday, January 1
• Martin Luther King Jr. Day: Monday, January 18
• Presidents' Day (Washington's Birthday): Monday, February 15
• Memorial Day: Monday, May 31
• Juneteenth: Saturday, June 19 (federal observance on Friday, June 18)
• Independence Day: Sunday, July 4 (federal observance on Monday, July 5)
• Labor Day: Monday, September 6
• Columbus Day / Indigenous Peoples' Day: Monday, October 11
• Veterans Day: Thursday, November 11
• Thanksgiving Day: Thursday, November 25
• Christmas Day: Saturday, December 25 (federal observance on Friday, December 24)

Three 2027 holidays land on a weekend, so the day off your employer gives you differs from the holiday date. Put the observed date on your calendar if you use it for scheduling around time off.

To create one fast in classic Outlook, double-click the date in Month view, type the name, check All day event, and set Show As to Free. Leaving it on Busy blocks your free/busy time for coworkers who try to book meetings with you.

Why Does the Subscribed Calendar Show Wrong or Missing Dates?

Most sync problems trace back to three causes: the feed hasn't refreshed yet, the link was pasted wrong, or your organization blocks internet calendars.

Work through these checks:

• Wait for the first sync. Outlook on the web and new Outlook refresh subscribed calendars every few hours, not in real time. A brand-new subscription sometimes shows empty for up to an hour.
• Check the link format. The ICS address must end in .ics and start with https://. A webcal:// link works in most Outlook versions, but if yours rejects it, swap webcal for https.
• Look for an admin block. Some Microsoft 365 tenants turn off internet calendar subscriptions. If Subscribe from web or From Internet is grayed out, ask your IT team for an organization-wide holiday calendar. Microsoft's known-issue article recommends this route for businesses.
• Confirm the calendar is visible. A subscribed calendar with its checkbox cleared stays hidden in the left pane. Tick it on.

Should You Wait for Microsoft to Fix This?

No. As of September 27, 2026, Microsoft has not published a date for an updated holiday file, and its known-issue page still points users to alternate sources. A subscribed calendar keeps working through 2027, 2028, and beyond with no further action from you.

If you set up the subscription in Outlook on the web, you're done across every Outlook app tied to the same account. If Outlook on the web won't let you sign in to finish the setup, start with our guide to Outlook email login problems. For related Outlook calendar trouble, see how to fix classic Outlook crashing when you accept a shared calendar invite, and if reminders for those events never appear, work through new Outlook reminders not popping up on Windows 11.