DIS unable to connect to DataMiner Agent

Affected versions

DIS 3.1.6

Cause

DIS 3.1.6 introduces features that make use of additional web API endpoints, such as importing a dashboard or low-code app solution from a DataMiner Agent. This connection depends on a trusted certificate to establish a secure link. If the certificate cannot be validated, an exception may occur, preventing the connection from being established.

Fix

Install the latest DIS release (3.1.7 or higher).

Description

When using DIS 3.1.6, connecting to a DataMiner Agent fails with an error message similar to one of the following examples:

System.ServiceModel.FaultException: 
System.Net.Http.HttpRequestException: An error occurred 
while sending the request. —> System.Net.WebException: 
The underlying connection was closed: Could not establish 
trust relationship for the SSL/TLS secure channel.

Could not connect to DMA! : System.ServiceModel.FaultException: System.ServiceModel.FaultException: System.Net.Http.HttpRequestException: Response status code does not indicate success: 404 (Not Found).
   at System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode()
   at SLDisDMAComm.SLDisDmaCommService.ConnectToWebApi() in D:\a\DIS\DIS\ProtocolEditor\SLDisDMAComm\SLDisDmaCommService.cs:line