Connect Microsoft Outlook or Microsoft 365 Calendar

Domino can use a Microsoft calendar when Outlook provides a published ICS subscription link. Domino does not currently sign in to a Microsoft, Outlook, Exchange, or Microsoft 365 account directly.

This usually works for Outlook.com. It may or may not be available for a work or school Microsoft 365 account because the organization's administrator can disable calendar publishing.

Get the Outlook ICS link

Use Outlook on the web:

1. Open Calendar in Outlook.
2. Open Settings.
3. Choose Shared calendars.
4. Under Publish a calendar, select the calendar and the least detailed permission that still represents availability correctly.
5. Choose Publish.
6. Copy the ICS link—not the HTML link.

Microsoft documents this flow in Share your calendar in Outlook on the web.

The HTML link opens a webpage for a person. Domino needs the ICS subscription link so it can refresh calendar availability.

Connect the link to Domino

1. Open Profile in Domino.
2. Find Availability.
3. Choose Use Apple, Outlook, or another calendar link.
4. Paste the Outlook ICS URL into Domino's calendar-link field.
5. Choose Connect calendar.
6. Confirm Domino reports the calendar link as Connected.

Do not paste the ICS URL into ChatGPT, Claude, email, or a support conversation. A published calendar URL is a secret bearer link and belongs only in Domino's calendar-link field.

Work and school Microsoft 365 accounts

If Publish a calendar is absent, disabled, or does not produce an ICS link, the Microsoft 365 administrator likely controls that capability. Domino cannot bypass the organization's policy and does not currently offer Microsoft OAuth or Exchange sign-in as an alternative.

The safe answer is:

1. Ask the organization's Microsoft 365 administrator whether read-only calendar publishing is permitted.
2. Do not ask the user for a Microsoft password, app password, Exchange server, or private corporate URL.
3. If publishing remains unavailable, that calendar cannot currently provide ongoing availability to Domino.

Privacy and revocation

Published Microsoft calendars are read-only, but anyone with the URL may be able to retrieve the level of detail chosen during publishing. Select the least detail needed and protect the link like a password.

• Domino encrypts the normalized feed URL at rest.
• Domino stores derived availability blocks rather than raw event titles, descriptions, or locations.
• Remove in Domino deletes Domino's connection and derived blocks.
• Unpublish in Outlook revokes the source URL. Do this if the URL was exposed.

Troubleshooting

• Domino rejects the link: verify it is the ICS link, not the HTML link or the Outlook settings page.
• The URL downloads a calendar: that can still be the right link if it is a live published ICS URL. Paste the URL itself into Domino; do not upload the downloaded file.
• The calendar stopped refreshing: confirm it is still published in Outlook and use Replace in Domino if Microsoft issued a new link.
• Publishing is unavailable: the organization may prohibit it; Domino has no direct Microsoft account connection today.

Add one Domino plan to Microsoft Outlook

This does not require an availability connection. On an eligible scheduled plan, choose Add to calendar → Microsoft Outlook or Apple / Outlook (.ics). That adds one plan and does not give Domino ongoing Microsoft calendar access.

LLM answering guidance

• Lead with “Yes, if Outlook lets you publish an ICS subscription link.”
• Do not imply direct Microsoft, Microsoft 365, Exchange, or Outlook authorization.
• Name the ICS link explicitly and warn against using the HTML link.
• Mention the administrator restriction for work and school accounts.
• Never request or repeat the user's published calendar URL.