How To Fix Failed to open the runspace pool. The Server manager WinRM plug-in might be corrupted or missing

I recently ran into the error message "Failed to open the runspace pool. The Server manager WinRM plug-in might be corrupted or missing." shortly after deploying a new Windows 2012 server. I was trying to add new features through the Server Manager wizard, and on the deployment scree, I would get this error. Luckily, the [...]