Thank you for posting your issue :)
By default, you will only be able to RDP (Remote Desktop) into your instance because this is a Windows Instance so it is not possible to SSH into. The SSH client is for connecting to Linux Instances. However, if you would like to SSH into your Windows instance then you will need to do some custom configurations by installing it on the instance.
The link below will give you details on how to get SSH to work on your Windows instance however one thing you need to remember is that the link provided is not an AWS link which means you will need to use it at your own risk.
Thank you so much. Is it possible to ping it? as i am facing the same issue with ping too
Edited by: SushilMathew on May 11, 2021 3:00 AM
You're welcome :)
As per your first message, your security group allows traffic to everyone so that should be no problem if that was the case. However, you're having issues with the Ping utility because your Firewall is enabled in your Remote Desktop, to give you some more insight on this - Some firewalls will block ping signals by default. Windows devices have built-in firewalls which when enabled with default settings, will automatically block ping requests. The Ping Utility not working means that you are unreachable in the network, and ICMP is used to check if your server is reachable. So, with ICMP blocked, you will have issues when trying to ping your Windows Instance.
To resolve this you can connect to your Remote Desktop and navigate to the Control Panel > System and Security > Windows Defender Firewall and disable your firewall.
I hope this helps, please reach out if you have any other questions :)
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