I think its a combination of 3 things that make this problem pop up :

1. .Net framework 4 and above are standalone frameworks so they do not contain the updates...

You can pass the remote system name to the function as a parameter and you should get results for that server. Like :

Get-FreeSpace -HostName Servername

the only thing you need to...

@john-2 Lacey

Function only remain active in your current session. If you plan to use a specific function frequently you can create a profile of your's and insert all...