Office 365 contacts

Check the People page in Outlook on the web first; it will show whether the complete contact records are stored in the Microsoft 365 mailbox or only on the Android device.

1. Check the mailbox copy

1. Sign in to Outlook on the web with the same Microsoft 365 work account used on Android and Windows.
2. Select People → Your contacts.
3. Select one affected contact and inspect its phone number, address, and other fields. Outlook on the web displays the saved mailbox contacts and their full profile cards.^1^

Then follow the matching result below.

If the web contact contains all the information

The mailbox data is intact, so the Windows Outlook client is not displaying or synchronizing it correctly.

1. In Windows Outlook, open People and select the contact.
2. Open the complete contact card rather than relying on the list, which may show only names or limited fields.
3. If using new Outlook, try another view under People, then remove and re-add the Microsoft 365 account to force a fresh synchronization:
   • Settings → Accounts → Email accounts
   • Select the account → Manage → remove it.
   • Add the same account again and allow synchronization to finish.

Removing and re-adding the account is the recommended next step when contacts are complete on the web but missing or incomplete in new Outlook.^2^

If the web contact has only a name or is absent

Determine where the complete record appears on Android:

• Inside Outlook: Open Outlook → Search → Contacts → select the person.
• Only inside Android’s Contacts app: The record may be device-local, associated with Google, or stored under another account rather than in the Microsoft 365 mailbox.

For a Microsoft 365 account, enable contact synchronization:

1. In Android, open Settings → Apps → Outlook → Permissions.
2. Allow Contacts and account access.
3. Open Outlook → profile picture → Settings → select the Microsoft 365 account → enable Sync Contacts.
4. Keep Outlook open while synchronization starts, then check the contact again in Outlook on the web.

Microsoft 365 accounts support two-way synchronization between Outlook and Android contacts when Sync Contacts is enabled.^3^ Permissions are required before Outlook can synchronize with Android’s Contacts app.^4^

If the account is identified as IMAP or POP, it cannot synchronize contacts—those protocols synchronize email only. The account must be added as a Microsoft 365/Exchange account; for a managed business account, contact the Microsoft 365 administrator if that option is unavailable.^5^

If synchronization is blocked

For a company-managed Android device, an Intune app-protection policy can disable Save Contacts/Sync Contacts. Ask the Microsoft 365 administrator to check whether synchronization with native apps is blocked for Outlook.^6^

References

1. Using contacts (People) in Outlook on the web | Microsoft Support
2. All my contacts are missing with the new outlook. How to fix? - Microsoft Q&A
3. How do I sync my Outlook contacts to my address book? | Microsoft Support
4. [Outlook app](https://support.microsoft.com/outlook/can-t-sync-calendar-and-contacts-with-my-phone-or-tablet)
5. Troubleshoot Outlook mobile issues | Microsoft Support
6. Deploying Outlook for iOS and Android app configuration settings in Exchange Online