On Windows XP
To install on Windows XP install Powershell 2.0 first:
install system updates (and .Net updates)
uninstall Powershell 1.0 (show updates in Add or Remove programs)
install Powershell 2.0
Using Windows 7 choco fails on some packages with error:
"GetResponse" with "0" argument(s): "The underlying connection was closed: An unexpected error occurred on a send."
Error caused by TLS 1.1 and TLS 1.2 not enabled by defult in older .Net packages so in Powershell. 1)2) To enable support of newer TLS install updates for .Net and KB3172605