.net - WMI + Bitlocker + C# Get encrypted Volumes produces timeout -

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i want create wrapper class specific wmi functions affect bitlocker functionality. first step bitlocker volumes of machine created console application , did this:

private static managementclass management;     private static managementobjectcollection volumes = null;      static void main(string[] args)     {          managementpath path = new managementpath();         path.server = "";         path.namespacepath = "\\root\\cimv2\\security\\microsoftvolumeencryption";         path.classname = "win32_encryptablevolume";           connectionoptions options = new connectionoptions();         options.authentication = authenticationlevel.packetprivacy;         options.impersonation = impersonationlevel.impersonate;          managementscope scope = new managementscope(path, options);         objectgetoptions getoptions = new objectgetoptions();          management = new managementclass(scope, path, getoptions);         management.get();         volumes = management.getinstances();      }

when run on non-bitlocker machine volumes collection gets initialized ok, has count of 0 of course. copied code on winforms app , when click button run code steps through ok when try expand collection during debugging app hangs , "function evaluation timed out". it's same code in application. reason this?

hm. got null reference exception if didn't run administrator, when ran administrator (win 7 x64, btw), got 4 volumes back.


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