Free EditionUsers encounter a "Server unreachable: FQDN Verification" error message when attempting to connect to the server. This typically happens when the server's SSL certificate lacks the Fully Qualified Domain Name (FQDN) in its Subject Alternative Name (SAN) list.
The SSL certificate used by the server does not include the FQDN in its SAN list. This omission prevents devices from verifying the server's identity, leading to connectivity issues during enrollment or management operations.
Add FQDN to SAN List:
The administrator should update the server's SSL certificate by adding the FQDN to the SAN list. This ensures that the certificate includes all necessary identifiers for secure communication.
Upload Updated Certificate:
After updating the SSL certificate with the correct FQDN in the SAN list, upload the updated certificate to the server. This step is crucial for ensuring that devices can validate the server's identity without encountering errors. Learn More.Avoid Certificate Changes:It's essential to avoid changing the entire SSL certificate unnecessarily, as this can disrupt the communication between the MDM application and the server. Instead, focus on updating the existing certificate with the required FQDN.
If the problem still persists, contact mdm-support@manageengine.com (MDM On-Premises) or mdmcloud-support@manageengine.com (MDM Cloud)