Q: I'm trying to remotely run PowerShell commands on a node in a cluster, but the commands aren't working because of an authentication problem. Why?
A: When a PowerShell command is executed on a remote server, your credentials are used to perform actions on that remote box. In order to protect the use of your credentials, a remote server can't then use the credentials it was passed on another server, which would create a double-hop of credential usage. When you run cluster commands, all nodes in the cluster are communicated with to perform actions—which will fail because the cluster node you remotely connected to doesn't have the rights to use the credentials on other nodes in the cluster.