This resource represents all users available in the user store that can administer ArcGIS Server and access the GIS services hosted on the server. In short, it represents the complete user space.
ArcGIS Server is capable of connecting to your enterprise identity stores such as Active Directory or other directory services exposed through the LDAP protocol. Such identity stores are treated as read only, and ArcGIS Server does not attempt to update them. As a result, operations that need to update the identity store (such as adding users, removing users, updating users, assigning roles and removing assigned roles) are not supported when identity stores are read only. On the other hand, you could configure your ArcGIS Server to use the default identity store (shipped with the server) which is treated as a read-write store.
The total numbers of users are returned in the response.
Typically, this resource must be accessed over an HTTPS connection.
Description: The response format. The default response format is html.
Values: html | json