Sync an Exchange Online account in native Android Calendar & Contacts apps

Requirements

• Your account must be a Microsoft 365 or Exchange Online account.
• The account must be added using Exchange ActiveSync, not IMAP or POP.
• Native Android apps (Calendar and Contacts) must support Exchange sync.

Sync Calendar

1. Open Android Settings
   Go to your device’s Settings > Accounts.
2. Add Account
   Tap Add account, then choose Exchange or Microsoft Exchange ActiveSync.
3. Enter Credentials
   Provide your full Office 365 email address and password. If prompted, enter server settings:
   • Server: outlook.office365.com
   • Domain: leave blank
   • Username: your full email address
4. Enable Calendar Sync
   After setup, go to Settings > Accounts > Exchange > [Your Account] and ensure Sync Calendar is enabled.
5. Verify in Calendar App
   Open the native Calendar app and confirm your events are visible. You may need to select your Exchange account from the calendar list.

Sync Contacts

1. Enable Contact Sync
   In Settings > Accounts > Exchange > [Your Account], make sure Sync Contacts is turned on.
2. Open Contacts App
   Launch the native Contacts app.
3. Filter by Account
   Tap the menu or settings icon, then choose Contacts to display. Select your Exchange account to view synced contacts.
4. Force Sync if Needed
   If contacts don’t appear immediately, go to Settings > Accounts > Exchange > [Your Account] > Sync now.

Notes

• If your account was added as IMAP or POP, calendar and contacts will not sync. Remove and re-add the account using Exchange ActiveSync 
• Two-way sync is supported, meaning changes made on your device or in Outlook will reflect across both platforms 
• For best results, Microsoft recommends using the Outlook for Android app, which offers deeper integration and better sync reliability