The following code produces different results when executed on a window7 64 bit machine than windows XP: int _tmain(intargc, _TCHAR* argv[]) { DWORD r, ver, len, cnt; ver = 0; PMCAST_SCOPE_ENTRY b; r = McastApiStartup(&ver); r = McastEnumerateScopes(AF_INET, TRUE, NULL, &len, &cnt); b = (PMCAST_SCOPE_ENTRY) newbyte[len]; memset(b, 0, len); r = McastEnumerateScopes(AF_INET, TRUE, b, &len, &cnt); on windows xp the the results match the SDK doc. on windows7, all the data is there but the ScopeDesc field is in a different location and the format of UNICODE_STRING is different. Is this expected? If so there a new SDK for WIN7? return0;

Hi, Based on my knowledge, SDK may be different between Windows 7 and Windows XP. Please download Windows SDK for Windows 7 and see how it works. Details: Windows SDK for Windows 7 If you need further assistance, as the question is related to Windows Development, it is recommended to post questions in Windows Desktop Development Forum. Hope this helps. Jeremy Wu TechNet Community Support

Hi, Based on my knowledge, SDK may be different between Windows 7 and Windows XP. Please download Windows SDK for Windows 7 and see how it works. Details: Windows SDK for Windows 7 If you need further assistance, as the question is related to Windows Development, it is recommended to post questions in Windows Desktop Development Forum. Hope this helps. Jeremy Wu TechNet Community Support

Hi, Just check if there is any update. Regards. Jeremy Wu TechNet Community Support