I've been having an issue publishing feature services from 10.3.1 to ArcGIS online where it hangs at "Server-side post processing". Service definition seems fine.
A co-worker in the same org was having the same problem with different data. I've searched and couldn't find anything. I have no problems publishing to our internal server. When logging in to see if it published it's just this we see.
I've also tried uploading the service definition and building the service in ArcGIS online and it does the same exact thing. We have plenty of credits and I am an administrator. Thoughts why this would break all of a sudden?