Recently i was writing a PS script to check a list of websites. To do this I was using a .net class
HttpWebRequestSo I wrote the script in powerGUI on the server where I wanted the script to run. I got it working within powerGUI, so I thought I would then schedule the script.
But when I run the script from the tesk scheduler I was met with an error, stating that one of the objects I wanted to use didnot contain a method.
Method invocation failed because [System.Net.HttpWebResponse] doesn't contain a method named 'Dispose'.
What?!, it worked fine in the powerGUI on the same server.
Anyway I eventually tracked this down to the fact that powershell 2.0 starts with an older .Net framework CLR. So I needed to get powershell to run a later version.
I found an article here, it explains the problem and the solutions nicely.
http://viziblr.com/news/2012/5/16/the-easy-way-to-run-powershell-20-using-net-framework-40.html
I created the xml files in the locations specified and it solved my problems.
C:\Windows\System32\WindowsPowerShell\v1.0
- powershell.exe.config
- powershell_ise.exe.config
XML contents
<?xml version="1.0"?>
<configuration>
<startup useLegacyV2RuntimeActivationPolicy="true">
<supportedRuntime version="v4.0.30319"/>
<supportedRuntime version="v2.0.50727"/>
</startup>
</configuration>
