October 19, 2022October 19, 2022 How to fix SSH error: Unable to negotiate with xxx.xx.xxx.xx port 22: no matching host key type found. Their offer: ssh-rsa,firstname.lastname@example.org,ssh-dss. To fix this error. Just use the following along with SSH command. ssh -oHostKeyAlgorithms=+ssh-dss email@example.com Then enter password and login to your remote machine.