Access to MDM server blocked

Problem

On clicking Sync from the ManageEngine MDM app, to reach the MDM server, the error message, Access blocked! Contact IT Admin is shown.

Cause

The error might be due to one of the following reasons:

Resolution

  • Restart the server and try Sync again.
  • Ensure that the required ports and domains are whitelisted on the firewall/filter.

If the problem still persists, contact mdm-support@manageengine.com (MDM On-Premises) or mdmcloud-support@manageengine.com (MDM Cloud)