I am unable to get Autopilot working

Question

I have setup autpilot, uploaded the csv, created a group - added the computer, assigned a configuration profile and have the Intune Connector installed. I have run through the delegation wizard for the computer that is running it and checked persmissions on the ou. I have the OU info correct in the domain join.

I am getting an error on the Intune connector box in the event log -

RequestOfflineDomainJoinBlob_Failure: Failed to generate ODJ blob

RequestId: digits deleted

DeviceId: digits deleted

DomainName: its in there but I deleted it

RetryCount: 0

ErrorDescription: Failed to call NetProvisionComputerAccount machineName=IT- ucBuUu7IrDm

InstanceId: 458E8BE2-0B37-4278-98B2-AC1311A571E0

DiagnosticCode: 268435455

WinErrorCode: 9560

DiagnosticText: We are unable to complete your request because a server-side error occurred. Please try again. [Exception Message: "DiagnosticException: 0x0FFFFFFF. We are unable to complete your request because a server-side error occurred. Please try again."] [Exception Message: "Failed to call NetProvisionComputerAccount machineName=IT- ucBuUu7IrDm"]

The autopilot machine is getting the "something went wrong" 80070774 error and the get-autopilotdiagnostics is showing an error "Could not establish connectivity" in one of the Offline Domain Join steps.

Ideas?