PowerShell 4.0 ISE doesn't use the system proxy settings

Question

I can retrieve the contents of a URL using something like 'iwr
http://www.adobe.com' in the command-line PowerShell host.
This takes into account the proxy settings in Control Panel / Internet Options.
If I attempt the exact same thing in the PowerShell ISE, I get:
iwr : The remote name could not be resolved: 'www.adobe.com'
This works only if I add the -Proxy and -ProxyUseDefaultCredentials options.
How comes?
How do I fix this?

Answer 1

I hate to say, but I don't understand how what I see is compatible with your statement.
Let me show what I'm experiencing with more details.
Here's what I get without any proxy options from powershell.exe:
PS 4.0 ~> $r = iwr http://www.adobe.com
PS 4.0 ~> $r -eq $null
False
PS 4.0 ~> $r.GetType()
IsPublic IsSerial Name                                     BaseType
True     False    HtmlWebResponseObject                    Microsoft.PowerSh...
and here's what I get from the ISE:
PS ~> $r = iwr http://www.adobe.com
iwr : The remote name could not be resolved: 'www.adobe.com'
At line:1 char:6
+ $r = iwr http://www.adobe.com
+      ~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-W
   ebRequest], WebException
    + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebR
   equestCommand
PS ~> $r -eq $null
True
If the CmdLet requires the -proxy option, how do you explain the results I get without the option from powershell.exe?
Next to that, here's what netsh reports:
PS 4.0 ~> netsh winhttp show proxy
Current WinHTTP proxy settings:
    Direct access (no proxy server).
This is not what I have under "Internet Options", where "Automatically detect settings" and "Use automatic configuration script" are both checked. But IIRC from the proxycfg.exe days this reports the "system-wide"
proxy settings, not the per-user proxy settings.