If you get below error when trying to pull or update your Mercurial repository, chances are your SSH agent didn’t forward your key; remote: Permission denied (publickey). abort: no suitable response from remote hg! To make sure your SSH agent have access to your key run below command: ssh-add -l OR ssh-add -L If you get “Could not open a connection to your authentication agent.” message, that means your key didn’t get forwarded by your agent.