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Connect Outlook Calendar

Updated July 2026

You'll learn how to: Hook your Outlook (Microsoft 365 / work) calendar into Nynch so events land on the right contact and deal timelines.

Time: 2 minutes.

Before you start

  • You need a work or personal Microsoft account that owns the calendar.
  • Your admin must allow third-party app sign-in for that tenant (most do by default).
  • The Gmail / Outlook integrations are independent. Connecting one does not affect the other. You can have both.

Steps

  1. At the top-right, open your avatar menu, then click Settings.
  2. Click the Email & Calendar tab at the top.
  3. Scroll to the Email & Calendar Integrations panel.
  4. Find the Outlook Calendar card. It will show the description "Sync your Outlook Calendar events".
  5. Click Connect on the right side of the card.

Outlook Calendar card with Connect button in Email and Calendar settings

  1. A Microsoft sign-in window opens. Pick the account that holds the calendar.
  2. On the consent screen, approve the requested calendar-read permissions.
  3. The window closes and the card flips to show a Connected badge.
  4. A "Setup complete!" toast confirms the link.
  5. Nynch immediately starts a one-time backfill of past events. A progress banner appears: "Importing Outlook calendar history...".

The first import covers your recent history. Forward sync (new events) runs on a schedule from then on. See Resync a calendar if you ever need to force a refresh.

What Nynch does with the data

  • Reads events to attach them to the right contact and deal timelines.
  • Uses attendee emails to match the event to existing contacts in your workspace.
  • Does NOT write to your calendar. Outlook Calendar is read-only by Nynch.

If something goes wrong

  • Symptom: "Sign-in window closes immediately with no toast." → Fix: Your browser may have blocked the popup. Allow popups for app.nynch.com and click Connect again.
  • Symptom: "We could not connect. Admin consent required." → Fix: Your tenant has admin-only consent enabled. Forward the consent URL to your IT admin or ask them to pre-approve the Nynch app in Entra ID, then retry.
  • Symptom: "Card shows Reconnect Required after a few weeks." → Fix: The OAuth token expired or you changed your Microsoft password. Click the refresh icon next to the card and re-sign in.
  • Symptom: "Events from a shared/team calendar are not appearing." → Fix: Only the primary calendar of the signed-in account is synced. Shared calendars are not pulled in v1. Switch to the owning account if you need those events.
  • Symptom: "Import banner has been spinning for over 30 minutes." → Fix: Click Cancel on the banner, then click Configure on the Outlook Calendar card and pick a narrower date range for the backfill.

Related: Connect Google Calendar | Resync a calendar | Schedule a meeting from a deal | Settings, tab by tab.