AWS and PuTTy. bad service request ssh-connection [closed]

Question

When I tried to access my EC2 instance using Putty, I got as error saying "bad service request ssh-connection". What did I do wrong and how can I fix this problem?

Here is what I did.

1. Created a new instance with new key pair.
2. PuTTy gen converted pem file into ppk file.
3. In PuTTy, I set host name ec2-user@Public DNS(IPv4).
4. Under Connection-SSH-Auth, I browsed for the ppk file I got earlier.
5. I unchecked Display pre-authentication banner and checked Bypass authentication entirely.
6. Then hit open

I should be able to access Amazon Linux Terminal but I got error, "bad service request ssh-connection"

EDIT: I am sorry if this question was off topic. Since AWS, AWS-EC2, and PuTTy were all legit categories, I thought I could ask questions about them.

Answer 1

In step 3, remove ec2-user@ and only keep your public DNS.

In step 5, check pre-authentication and uncheck Bypass authentication.