Article 6KXMX [SOLVED] Ubuntu Server 20.04 SSH multiple public keys in authorized_keys not working

[SOLVED] Ubuntu Server 20.04 SSH multiple public keys in authorized_keys not working

by
tem.penlington
from LinuxQuestions.org on (#6KXMX)
As a beginner i create a secure ssl private/public key login for root.
I understand this is bad practice and created a new user and added their key to the file authorized_keys which now has root and new user key. When I try to login via putty with the private key it does not allow me. What is the process to do this. I assumed as the file says authorized_keys it means multiple keys can be added, or am i wrong?
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