"Unable to negotiate" with AWS CodeCommit: "no matching host key type found"

Question

I'm trying to connect to AWS CodeCommit with SSH. I've followed every step in this guide:

https://docs.aws.amazon.com/codecommit/latest/userguide/setting-up-ssh-windows.html#setting-up-ssh-windows-install-git

but when I get to where I need to run the following command

ssh [email protected]

I get this error

Unable to negotiate with 52.95.17.51 port 22: no matching host key type found. Their offer: ssh-rsa

Answer 1

Nvm i found a solution i had to add this to my .ssh/config file

HostKeyAlgorithms +ssh-rsa
PubkeyAcceptedKeyTypes +ssh-rsa

if you getting this error after you added those two lines

Bad configuration option: \240\240pubkeyacceptedkeytypes

is because the spaces in the config file arent spaces their 240 characters

this helped me

Bad configuration option: \240\240user when setting up Amazon CodeCommit

what i did was copy the spaces that were on my other lines and used them in the new lines i added

Answer 2

For me, the problem was that windows was referring to the wrong root hard drive disk. (because pc managed by system administrators)

The solution was to create a new environment variable called HOME. With the directory of your .ssh folder.

• press windows key
• write edit environment

• Click on the first new button

• variable name = HOME
• variable value = directory of your .ssh folder

• press ok

• press the other ok to save the changes.

• Apply @Austin Grant answer afterwards if it doesn't work.