Troubleshooting/Problems-with-solutions/Connection-failures-when-using-VSCode-Remote-SSH-Extension.md

+**Credits: IT-Services Cluster Support/Maximilian**
+
 **Symptom:**
 1. SSH connection to cluster starts failing with `ssh: connect to host cluster.pik-potsdam.de port 22: Connection refused`
 2. Attempts to login via ssh to the cluster, or to start a new process/task on a login node when already logged in, result in an error "fork: retry: No child processes"