Why you are seeing this error

Mailbird uses Microsoft Exchange Autodiscover to find the correct connection settings for many Exchange accounts. If Autodiscover is missing, not configured correctly, blocked by SSL or DNS issues, or returning an invalid response, Mailbird may not be able to add the account automatically.

Common messages related to this problem

• autodiscover is not setup
• autodiscover is not set up
• autodiscover not working
• The Autodiscover service response was invalid.
• Login Timeout 440

What to do

1. Check whether your Exchange admin has enabled and configured Autodiscover for the domain.
2. Verify that the Autodiscover DNS records are present and correct.
3. Make sure the Exchange web services and SSL certificate are accessible from outside the server if required by your setup.
4. If Autodiscover is unavailable, ask your Exchange admin whether manual EWS configuration is supported.
5. If your account is Microsoft 365 rather than on-prem Exchange, make sure you are using the correct Microsoft 365 provider flow instead of a manual Exchange path.

Important note

This issue is usually caused by Exchange server configuration, DNS, SSL, or network accessibility problems rather than by Mailbird itself.