getting error what trying to connect to O365 target
connect to remote server failed
the proxy auto configuration file was not found.
I cannot find the exact article I am looking for, but if you sign into the console as the service account the ADLDS DB is using (Auxiliary Account), you can then go to Control Panel (or however) and select Internet Options, Connections, LAN Settings,, and uncheck the "Automatically Detect Settings", Click OK.
Try again, and it should work.