When I open up a main form for a record in a D365 on-premise environment (v. 9.1), the following XHR call fails:
/AppWebServices/ApplicationMetadataService.asmx/RetrieveWebClientUserContext
When this call fails, there is some Javascript which should render the multiselect optionset control on the main form, which fails. This has a consequence that the control doesn't render when you are editing it.
Does anyone know why this call fails, or how to troubleshoot it on a on-premise environment?
We only experience this on 1 of all our environments.