Export VHDX to AWS EC2

Question

Hi HyperV Experts,

I've followed the guidance here https://aws.amazon.com/premiumsupport/knowledge-center/import-server-ec2-instance/ to export a VHDX to S3 and create an AMI from this to launch in EC2 instance into an existing VPC.

This all works perfectly until I come to RDP to the instance - it just won't let me RDP

• The instance is running
• I can ping the assigned public IP Address
• I can connect via the EC2 Session Manager and carry out Powershell commands (eg, netstat /p tcp /a | findstr 3389 which gives the result : TCP 0.0.0.0:53389 MYCOMPUTER:0 LISTENING)
• Ive also run the following command to check that Windows FireWall is off : Get-NetFirewallProfile | Format-Table Name, Enabled . All returned values are false.
• Ive tried setting the Remote Desktop app to force 'ask when required' for the user account to check - but Im not even getting prompted for user details.

The existing on Prem VM is part of a mydomain.local domain which I can RDP to with no problems.

Im really at a loss as I can't work out what else to try.

Are there any temporary changes I could make to the VM before I export it to AWS?

If I launch a fresh EC2 instance into the VPC and public subnet, I can RDP and connect it to our on-prem domain with no problems - and subsequently RDP using a domain account.

Im really desperate to get this working - so any advice greatly appreciated.

Thanks for any help.