EC2 instance created with public IP, but unable to access over HTTP

I have verified - security groups, nacls and ports are allowed.

Also when I create a EC2 instance, I always get value for "Auto-assign public IP" as disabled but when checked with another account, it is always enabled. I choose to edit network config and choose existing VPC and the same VPC is attached to Internet Gateway. The entry in ACLs and Route tables are having HTTP, HTTPS and SSH rules.

Not sure what is messed up.

Is your NACL open to all outbound, or at least has the full ephemeral port range allowing responses? Does your route table have a default route for all traffic to the IGW?

Hi - Please ensure that proper security groups, nacls and ports are allowed. Also when trying to hit using http do you have something running against which you would expect an answer, please cross check that. If you are going to use EC2 Instance Connect to connect to an instance, you need to configure every instance that will support a connection using Instance Connect (this is a one-time requirement for each instance) [2]

References

1. https://aws.amazon.com/premiumsupport/knowledge-center/ec2-connect-internet-gateway/
2. https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-connect-set-up.html
3. https://aws.amazon.com/premiumsupport/knowledge-center/vpc-fix-connection-with-elastic-ip/