You don't mention what version you are working with, that is a critical piece of information to include. The Esri Technical Support article you reference was last updated in 2018 and it was original written for 10.2.x. Esri has made a fair number of structural changes within ArcGIS Server starting with 10.6.x, which came out in 2018. Coincidence? I don't think entirely. I am not saying the Esri Support KB has incorrect information, it just has dated information that may not entirely apply to recent versions of the product in the quite the same way it did to older versions.