Fix Cannot Add Exchange ActiveSync Account on Samsung Phone
Question details
The user is unable to re-add a Microsoft Exchange ActiveSync account to a Samsung phone to synchronize native calendar and contacts.
- Product
- Microsoft Exchange
- Device & OS
- Android (Samsung A7)
- Scenario
- Attempting to restore synchronization for the device's native calendar and contacts using an Exchange ActiveSync connection.
- Observed behavior
- Adding the account fails, producing an account verification and connection error message.
Ensure your Samsung device has a stable internet connection and verify that you have the correct email address, password, and Microsoft 365 server details available.
Manually Verify Server and Port Settings
Use the manual setup option to ensure the device is pointing to the correct Exchange servers with the required security protocols.
Automatic configuration may sometimes fail to fetch the correct server endpoints for Microsoft 365 or custom Exchange deployments. Manually entering the server information ensures the connection targets the active server over a secure port.
Navigate to your phone's Settings, tap on 'Accounts and backup', and select 'Manage accounts'.
Tap 'Add account' at the bottom of the list, then choose 'Microsoft Exchange ActiveSync'.
Enter your email address and password, then select 'Manual setup' instead of proceeding automatically.
In the server field, input 'outlook.office365.com' or 'eas.outlook.com'. Ensure the Port is set to '443'.
Check the box that says 'Use secure connection (SSL)' and tap 'Next' to authenticate.
Request IT Administrator to Check Device Access Rules
Check if organizational security policies are blocking or quarantining your specific Samsung device from connecting to the server.
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Frequently Asked Questions
Why does my Exchange account say 'verification failed' on Android?
This error typically occurs if the manual server address is incorrect, the port is not configured to 443, SSL is disabled, or your organization's IT administrator has quarantined the device in the Exchange Admin Center.
What are the correct server settings for Microsoft 365 Exchange ActiveSync?
For most Microsoft 365 accounts, the server address should be set to 'outlook.office365.com' or 'eas.outlook.com'. The connection requires Port 443 with the SSL (Secure Sockets Layer) option enabled.
Can I sync Exchange contacts to my Samsung native apps without using Outlook?
Yes. By adding your account through your phone's Settings > Accounts > Add account > Microsoft Exchange ActiveSync, the data integrates directly into your Samsung native Calendar and Contacts applications.
