Originally published at: Unable to use key file "id_rsa" (OpenSSH SSH-2 private key (new format) - Computer How To
Attempting to SSH into a Linux server using an OpenSSH-generated key may result in the error: “Unable to use key file “id_rsa” (OpenSSH SSH-2 private key (new format)” This failure occurs due to Putty’s lack of support for OpenSSH keys; instead, Putty uses its proprietary format. In this article, you will learn how to convert…