Depending on how you have defined the roles users are assigned, it is possible for users to see potentially misleading information in certain applications or be unable to perform the administrative tasks as they expect. For example, if users select a role with administrative privileges to access an application such as SQL Server Configuration Manager or Microsoft SQL Server Management Studio and connect to a remote SQL Server instances, it might appear as if they have permission to start and stop services or perform other tasks. However, if the role does not include network access rights for the remote SQL Server instance, users will not have the appropriate permission to perform those tasks.
You can check whether the selected role includes network access rights using the Authorization Center. If the role being used does not include network access rights, check whether the user has additional network roles available to use in conjunction with the local role. If the role being used includes network access rights, you should check whether those rights are applicable on the network computer the user is attempting to manage. Users must be assigned to the role that has network access rights on the remote server.