I have tha solution of this why ec2 instance is gives this error. You can simply go to the directory where your .Pem file is stored. and run command "chmod 400 <pemfile>" by giving these permission you can able to connect to your ec2 by ssh.

Another point to add regarding issues with EC2 Instance Connect via AWS Management Console.

If you receive the following error when trying to connect to the instance:

Connection Error

Then it is likely that your Security Group was not properly configured.

EC2 Instance Connect uses specific IP address ranges for browser-based SSH connections to your instance (when users use the Amazon EC2 console to connect to an instance). If your users will use the Amazon EC2 console to connect to an instance, ensure that the security group associated with your instance allows inbound SSH traffic from the IP address range for EC2_INSTANCE_CONNECT. To identify the address range, download the JSON file provided by AWS and filter for the subset for EC2 Instance Connect, using EC2_INSTANCE_CONNECT as the service value. These IP address ranges differ between AWS Regions. For more information about downloading the JSON file and filtering by service, see AWS IP address ranges in the Amazon VPC User Guide.

To look for AWS IP address ranges for each service in each region, use the following JSON file available at https://ip-ranges.amazonaws.com/ip-ranges.json

For example, IP address range for the EC2 instance connect service at the us-east-1 region is:

us-east-1 IP address range

Thank you for your comment. We'll review and update the Knowledge Center article as needed.

Is there a youTube video or a training video that help with this? I am new to the entire AWS environment and it is not very newbie friendly with the navigation and menus. Been trying all the different options people recommended and now I think my account is a mess.

you can learn the process from following youtube link https://www.youtube.com/watch?v=rtG8S5WsSHg&t=26s

if you are new aws I would suggest attending the course from https://www.udemy.com/ .

for ec2 issue, Please check port 22 from security group

Hi, What's your error? Have you configured your SSH connections ?

• Ensure that the security group attached to your instance allows access to port 22 for Linux and port 3389 for Windows.
• Verify that your network access control list (network ACL) permits access to the instance.
• Confirm that your route table has a route for the connection these are some solutions i can recommend you this video will help you https://www.youtube.com/watch?v=rtG8S5WsSHg&t=26s

Solution: 1. Ensure the security group associated with your EC2 instance allows incoming connections on the required port. SSH (default port 22) for Linux instances. RDP (default port 3389) for Windows instances. Solution:2. ** IAM or AWS Account Issues** Ensure your IAM permissions allow you to manage and access the EC2 instance. Check for potential restrictions, such as AWS Organization Service Control Policies (SCPs). Solution:3.Confirm you're using the correct key pair file (.pem) associated with the EC2 instance. Ensure the key file has proper permissions: chmod 400 your-key.pem

If you are facing an EC2 connecting issue follow the steps to troubleshoot the issue>

1. Ensure the ec2 subnet has internet gateway access in the route table associated with the subnet.
2. Check if the security group has an inbound rule for Linux 22 port for Windows 3389 port enable to 0.0.0.0/0 or any specific IP
3. Please make sure you have created ec2 in the public subnet
4. Kindly Check your .pem file permission if you get this type of error. ssh -i my-apiserver.pem ubuntu@34.70.165.154 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Permissions 0644 for 'my-apiserver.pem' are too open. It is required that your private key files are NOT accessible by others. This private key will be ignored. Load key "my-apiserver.pem": bad permissions (ubuntu@34.70.165.154) Password:

if you see the error like above you need to give sudo chmod 400 my-apiserver.pem permission.

Kindly make sure this option is selected while creating an EC2 instance.

Auto-assign public IP Enable