Server unexpectedly closed the connection

0 votes

Hi Guys,

My AWS EC2 instance throws an error "Server unexpectedly closed the connection"  while trying to connect with Putty or WinSCP. 

How can I solve this error?

Thank You

Apr 2, 2020 in AWS by akhtar
• 38,240 points
1,047 views

1 answer to this question.

0 votes

Hi@akhtar,

There are many reason to cause this scenario. But most usual one is you have not configured your Security Groups correctly. Check for port number 22 in your security group.

Hope this will help.

Thank You

answered Apr 2, 2020 by MD
• 95,340 points

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