In an attempt to get a better SSL Labs rating on an Amazon EC2 instance, I made changes to the allowed Cipher Suites on my Windows Server 2012 R2 EC2 Instance. After making the change, I rebooted the instance, and I can no longer access the instance via remote desktop. Obviously something I changed has made it so I can no longer connect to my server. I had spent several hours configuring the instance. I did not create an backup or AMI or anything before making the changes.
Am I completely out of luck here, and I do I have to terminate the instance, and start a new one, and spend several hours configuring it again, or is there a way to recover what I have done and gain access back to the EC2 instance?