When launching a remote application session, in the bottom right a notification is shown: Connection denied by server.
In the awingu-application-gateway.service.log , the following PDU code is visible (note: it may be necessary to increase the log level of the gateway to a more verbose level: Increase log level of application gateway ).
23-08-18 08:42:46.460254+00:00 awingu01 awingu-application-gateway.service[java:11094]: cs-id: 96212d25-edc3-4c83-ae2d-ccc322c7dd72, Received Disconnect PDU with code 0x00000007
In the Session Collection properties of the Remote Desktop environment, the security settings are not correctly configured to work with Parallels Secure Workspace.
- On the Microsoft Windows environment, open Server Manager > Remote Desktop Services > Collections > your collection name.
- Under the Properties (of the collection) section: click Tasks > Edit properties.
- The Session Collection window should be visible now.
At the left, click Security.
- Uncheck Allow connections only from computers running Remote Desktop with Network Level Authentication.
Note: it may take a short while before this change is processed.