I have setup an MBAM test environment. We are currently using the 3 machine MBAM topology. We also setup during MBAM installation encrypted communication between our two servers using SSL certificates. During installation there were no errors. The MBAM GPOs have been created and linked in our test OU. I have confirmed through running gpresult that client machines have received the group policy. Yet, I am receiving an error in the logs that the workstations are not communicating with the endpoint. From the screen shot the machine is trying to check-in every 90 minutes as outlined in the GPOs but the machine is not communicating. I have also confirmed that the service endpoints in the GPOs are correct. Can someone assist with this issue? ----Update----- After researching for hours I see in the client logs that I have an incorrect endpoint. I receive the following message: Hardware exemption check failed. Error code: 0x803d0020 Details: The endpoint address URL is invalid. Are the following endpoints correct in the GPO? Key Recovery Service: http://<NameofAdministrationandMonitoringServer>:<Port#>/MBAMRecoveryAndHardwareService/CoreService.svc Status Reporting Service: http://<NameofAdministrationandMonitoringServer>:<Port#>/MBAMComplianceStatusService/StatusReportingService.svc I have the FQDN of my web server in place of <NameofAdministrationandMonitoringServer> When I input the URL in my web browser they check out and are verfied.

Reboot the client after installing MBAM. As a resolution ensure that the Administration and monitoring server is able to talk to the Recovery and Hardware database on the database server. This can be found by going into the Event Viewer/Windows Log/Application and searching for an ASP.net warning on the Administration and Monitoring server. Once this error is resolved by opening up port 1434 for UDP on the database server, the clients should now be able to communicate.

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