FileZilla: "Too many authentication failures for ubuntu" when i do sftp to my EC2 instance [closed]

Question

I have been using my AWS EC2 instance from last 6 months, but now when I use sftp, I keep getting this error.

Error:          Server sent disconnect message
Error:          type 2 (protocol error):
Error:          "Too many authentication failures for ubuntu"
Error:          Could not connect to server

How could I solve this issue?

Answer 1

Filezilla tries all the keys in ~/.ssh directory and the ssh daemon on most OS will deny access after 5 attempts with the message Too many authentication failures

Delete the unneeded keys or move the unneeded keys from ~/.ssh and keep no more than 4 keys in ~/.ssh