I have this VM instance in Google Console. The instance was created in project within another organization, then assigned to my email address.
I tried to access the instance directly via Browser and failed.
I then tried adding a key and connecting directly. I tried using PuTTy in Windows as well as terminal in Ubuntu.
All I get from the instance is "Too many authentication failures" in Ubuntu and "refused our key" in PuTTy
Server has network setting:
Ingress : Allow SSH from anywhere : Apply to all : IP ranges: 0.0.0.0/0 : tcp:22 : Allow
I am able to access several other instances with no issues, so this issue has left me stumped!