I'm testing ArcGIS Pro 2.3 currently within a 10.6.1 Enterprise environment. I have found that 2.3 will fail to publish any services. The log simply says, error publishing service (all the other staging/etc succeeds).
I get that a server upgrade will sometimes require client upgrades. But for a new client not to be compatible with a server instance only one revision behind - this is new to me.
Does 2.3 require the 10.7 Enterprise pre-release in order to publish hosted services?