Unable to access SSH for EC-2

Hello,

The first thing to check is the type of keypair you are using to ssh in- PPK or PEM. You cannot use .PEM with PUTTY but you can use .PPK. In the case it is a .PEM you can still use that type of key but must instead use the terminal to ssh in.

To create a key pair and add the public key to an EC2 instance in AWS, follow these steps: Step 1: Create a Key Pair Sign in to the AWS Management Console. Go to the EC2 Dashboard by navigating to the "Services" menu and selecting "EC2" under the "Compute" section. Step 2: Access Key Pairs In the EC2 Dashboard, locate and click on "Key Pairs" in the left-hand navigation pane under "NETWORK & SECURITY." Step 3: Create a New Key Pair Click on the "Create Key Pair" button at the top of the Key Pairs page. Give your key pair a name and select the file format. Click on the "Create Key Pair" button to generate the key pair. Step 4: Launch an EC2 Instance with the Key Pair Now, proceed to launch an EC2 instance if you haven't already done so. In the "Key Pair" step, select "Choose an existing key pair" and choose the key pair you created from the drop-down list.

Use this documentation for guidance: https://repost.aws/knowledge-center/user-data-replace-key-pair-ec2

For example using .pem use these lines Cd downloads ssh ec2-“username”@“123.123.12” -i ./“privatekey.pem”

however if you wish to use .PPK keypair you need to create a new ec2 instance and download .PPK keypair so you can use it in PUTTY.