How to resolve this error and add the Linux client.
Trust credentials are not supported for Linux clients. Therefore, if you have the 'Establish Trust' box selected when adding a Linux client, the following error displays: 'Agent prerequisite checking is not supported for this client type'. To resolve this error, uncheck the ‘Establish Trust’ box and add the Linux client without supplying trust credentials. For details, see To add a client to the Unitrends appliance in the Recovery-Series and UEB Administrator's Guide.