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Home / Wiki / Calendar & Meetings

Connect Outlook Calendar

Updated May 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. Open Settings (gear icon, bottom-left of sidebar).
  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.
  6. A Microsoft sign-in window opens. Pick the account that holds the calendar.
  7. On the consent screen, approve the requested calendar-read permissions.
  8. The window closes and the card flips to show a Connected badge.
  9. A "Setup complete!" toast confirms the link.
  10. 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.