PuTTY can’t find where your X server is, because you didn’t tell it. (ssh on Linux doesn’t have this problem because it runs under X so it just uses that one.) Fill in the blank box after “X display location” with your Xming server’s address. Alternatively, try MobaXterm. It has an X server builtin.
You need to tell scp where to send the file. In your command that is not working: You have not mentioned a remote server. scp uses : to delimit the host and path, so it thinks you have asked it to download a file at the path \Users\Admin\Desktop\WMU\5260\A2.c from the host C to your local home directory. The correct upload command, based on your comments, … Read more
For me this error appeared immediatey after I changed the user’s home directory by It can also happen because of lack of proper permission to authorized_key file in ~/.ssh. Make sure the permission of this file is 0600 and permission of ~/.ssh is 700.
OK, there was a small typo in my key. Apparently when pasting to file the first letter was cut off and it started with sh-rsa instead of ssh-rsa. nrathathaus – your answer was very helpful, thanks a lot, this answer is credited to you 🙂 I did like you said and set this in sshd_conf: … Read more