ArcGIS Server still maintains access to the Insights vendor files (.Jar) on an ArcGIS GIS Server installation even after it is removed from a multi-machine site, returning an error when rejoining it to either the previous ArcGIS Server site or another multi-machine site.

Solución alternativa

A clean uninstall of ArcGIS GIS Server on the new machine (removed from the site) along with the deletion of any remnant folders (C:\Program Files\ArcGIS\Server\framework\lib\ads\) allows to successfully reinstall and join another site without error.

Pasos para reproducir