Can't connect to my EC2 instance

Question

Upon launching it and trying to connect to it, I receive an error:

*EC2 Instance Connect is unable to connect to your instance. Ensure your instance network settings are configured correctly for EC2 Instance Connect. For more information, see EC2 Instance Connect Prerequisites at https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-connect-prerequisites.html.*

I've gone through the tutorial, tried adding a permission set to a security group, creating a policy and adding it to a user, checked that one of the inbound rules allows to connect to the instance from my IP, nothing worked. Can provide more details if necessary.

Accepted Answer

Resolved after I added an IP address of AWS pulled from this JSON file to one of the inbound rules:
https://ip-ranges.amazonaws.com/ip-ranges.json (filter on "EC2_INSTANCE_CONNECT" and your region)

for full tutorial: https://docs.aws.amazon.com/vpc/latest/userguide/aws-ip-ranges.html

Sadly this didn't seem to be in the overall tutorial on EC2.

Can't connect to my EC2 instance

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