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AcquireCredentialsHandle returns SEC_E_UNKNOWN_CREDENTIALS in Vista

I have code that works fine for all OSs from Win2KPro to Win2K3 Server, But fails for Windows Vista....

SchannelCred.dwVersion = SCHANNEL_CRED_VERSION;
SchannelCred.cCreds = 1;
SchannelCred.paCred = &CertContext;
SchannelCred.grbitEnabledProtocols = dwEnabledProtocols;
SchannelCred.dwFlags = 0;

SECURITY_STATUS ss = m_psft->AcquireCredentialsHandle (0,

if (ss != SEC_E_OK)

The Value of "ss" is SEC_E_UNKNOWN_CREDENTIALS and the GetLastError() returns Error 0x00000057 i.e. The parameter is incorrect.

Plz Help. It's URGENT
Dec 18 '07 #1
2 4814
9,208 Expert Mod 8TB

I suspect one of your arguments is incorrect.

See http://msdn2.microsoft.com/en-us/library/ms681382.aspx.
Dec 18 '07 #2
I am using Schannel SSP and as per the description in MSDN the given values are. Is there anything that is missing to be done?
Dec 19 '07 #3

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