Microsoft Bookings login: web, Outlook, Teams, mobile

To log in to Microsoft Bookings, go to book.ms and sign in with your Microsoft 365 work or school account. There's no separate Bookings username or password. You can also add the Bookings app to the left rail in Outlook on the web, the new Outlook for Windows or Teams. There is no Bookings phone app any more: Microsoft retired the iOS and Android apps on 15 July 2023, so on a phone you use book.ms in the browser.

Customers never log in to manage Bookings. They use the public booking page link, which needs no account unless you restrict it.

Every place you can use Bookings (as of October 2026)#

Microsoft Learn documents the same two routes for shared and personal pages: book.ms, or the Bookings app in Outlook or Teams. Once you're in, the home page has a Personal booking page section and a Shared booking pages section. To switch between shared pages, use the caret next to the business name. The FAQ calls that drop-down the only combined view of your pages.

The sign-in addresses#

book.ms is the address Microsoft gives on Learn. It's a short link, not where the app lives. When we followed these addresses on 20 October 2026, without signing in, this is where they ended up:

The new host comes from the cloud.microsoft domain, the single domain Microsoft is moving its user-facing Microsoft 365 apps to. If your network uses URL allow lists, Microsoft says to include *.cloud.microsoft to avoid connectivity problems. A Bookings app that loads at home but not in the office can be a sign that it's missing. An older change still matters for allow lists too. In 2023 public booking links moved from /owa/calendar/<address>/bookings/ to /book/<address>/ (MC528980), and Microsoft asked admins to allow the new pattern.

For public pages, https://outlook.office.com/book/<mailbox address>/ is the format the Bookings web app hands out. The same pages are also served from bookings.cloud.microsoft, the host the booking page itself now calls. Share whatever link the Booking page tab gives you rather than building one by hand.

Who can sign in, and what they see#

Bookings uses ordinary Microsoft Entra sign-in. What happens after that depends on four things:

• A licence that includes Bookings, with the Microsoft Bookings app ticked for the user. See which licence Bookings needs.
• Bookings turned on for the organization. If Allow your organization to use Bookings is off, nobody can open shared pages, existing ones included. Bookings with me has its own switch and keeps working, provided the user still has the Bookings app.
• An Exchange Online mailbox with Outlook on the web enabled. Bookings is cloud-only. The Teams admin article says on-premises mailboxes aren't supported, and the FAQ says Bookings doesn't work in a hybrid environment. A missing or on-premises mailbox gives "Mailbox not found".
• A role on the page. A shared page only shows up in your list if you're on its staff with a role that can open it.

Microsoft pages disagree on that last point. The FAQ says pages are available to staff in the Administrator or Viewer role. The staff roles article describes Team member and Scheduler roles that manage bookings in the mailbox, and says only Guest can't open it. As of October 2026 we treat Guest as the only role that definitely can't open the page. What each staff role can do compares them.

A Global Administrator doesn't see every page automatically. They can list the booking mailboxes in Exchange and Entra ID, but a page only opens in Bookings for its staff, or for someone given Full Access to the mailbox. The admin checklist covers granting that.

The Bookings app in Teams#

The Teams app runs on the same booking mailboxes as the web app, so nothing needs syncing. What to know as of October 2026:

• Prerequisites: an Exchange Online mailbox, Bookings on for the organization, a Bookings licence, and a licence that supports Teams meeting scheduling for every user and every staff member who joins appointments.
• Clouds: not available in GCC, GCC High, DoD or the sovereign clouds, according to both the Teams admin article and the Bookings service description.
• Pinning: admins can pin it for selected users with a Teams app setup policy.
• Editing group services: Microsoft says editing a group service from the Teams app resets its attendee limit to 1. Edit group services in the web app.
• Thin documentation: the support article "Overview of the Bookings app in Teams" now redirects to the general Bookings overview on Microsoft Learn. The Teams admin article is what's left that is specific to Teams.

Teams Premium adds SMS reminders and other advanced appointment features. Those are covered in Teams meetings and virtual appointments.

Bookings on a phone#

The Bookings mobile apps are gone:

As of October 2026, then, you run Bookings on a phone by opening book.ms in the mobile browser. The Microsoft article on group attendees still refers to editing "from the mobile app", which is an out-of-date reference to the retired app. Microsoft doesn't document Bookings with me inside the Outlook mobile app. Use the web app, or copy your link once and keep it handy.

Customers booking from a phone use the same public page in their browser. The problems on phones are usually embeds: a fixed-height iframe cuts off the time picker. See iframe height on mobile.

When you can't sign in or can't find Bookings#

After an admin changes a tenant setting, wait before testing again. Microsoft says Org settings changes can take up to four hours to apply. Any other symptom is in Microsoft Bookings troubleshooting.

BookingsXP is independent and not affiliated with or endorsed by Microsoft.