Question

Could not connect retrying error while trying to connect to a VM instance using SSH in browser

Answer 1

This error could probably be coz of the following:

• The instance might not be running the guest environment: Verify that the guest environment is installed and running.

• The boot disk of the instance has run out of free space: To identify issues with disk space, check the serial console output of the instance and look for "No space left" errors. 

• Permissions or ownership on $HOME, $HOME/.ssh, or $HOME/.ssh/authorized_keys might be wrong.