Core fails to contact license portal with "The HTTP request is not authorized on the Anonymous client authentication scheme." (4043104)

The Core is unable to contact the Rapid Recovery License Portal. The following error is logged in the AppRecovery.log file:

ERROR 2019-06-05T10: 50: 14 [2118] - Replay.Core.Implementation.Licensing.LicenseService ()
Phone Home v 7.0.1: Phone Home failed with unexpected exception.
System.ServiceModel.Security.MessageSecurityException depth 0: The HTTP request is not authorized on the Anonymous client authentication scheme. The server received the authentication header "". (0x80131501) ---> System.Net.WebException depth 1: The remote server returned an error: (401) Unauthorized. (0x80131509) at System.Net.HttpWebRequest.GetResponse () + 0x283 6000a20

Most likely the computer certificate the Core uses to authenticate with the License Portal is invalid and needs to be recreated.

To resolve this issue, recreate the Core server certificate:

1. Stop the Core service.
2. Open local computer certificates (certlm.msc).
3. Browse to Personal | Certificates.
4. Delete the certificate which contains the host name of the core.

     5. Start the core service

After the core service is started it will contact the License Portal. If it is successful you will see a succeeded status on the Licensing section of the Core Settings page.