Edge Encryption Mass Encryption Attachment Job Error: Unexpected response code from ServiceNow server: 500
You have started a mass encryption job to encrypt attachments. For most attachments the job proceeds without error, but at some point you see the following error in the $proxy_installation_location/logs/edgeencryption.log:
com.snc.edgeencryption.rest_client.RestException: Unexpected response code from ServiceNow server: 500
Repeated attempts to run the mass encryption job results in the same error.
The mass encryption job has errors, see the mentioned errors in the edgeencryption.log file.
There are corrupted attachments. The attachments are already corrupted before there is any attempt to do the encryption of the attachments. Since the attachments are already corrupted there is no possibility to perform the encryption. This is why the same error is seen each time the mass encryption is attempted.