A more secure way is to store the AutoLogon password in LSA using LsaStorePrivateData with DefaultPassword as KeyName and the password as PrivateData

A more secure way is to store the AutoLogon password in LSA using LsaStorePrivateData

C# Signature:

[DllImport("advapi32.dll", SetLastError = true, PreserveSig = true)]

    private static extern uint LsaStorePrivateData(
         IntPtr policyHandle,
         ref LSA_UNICODE_STRING KeyName,
         ref LSA_UNICODE_STRING PrivateData
    );

VB Signature:

Declare Function DefaultPassword Lib "advapi32.dll" (TODO) As TODO

User-Defined Types:

None.

Alternative Managed API:

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Notes:

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Tips & Tricks:

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Sample Code:

C++ sample code:

https://docs.microsoft.com/en-us/windows/win32/secauthn/protecting-the-automatic-logon-password

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secauthn/security/protecting_the_automatic_logon_password.asp

C# sample code:

see LsaRetrievePrivateData

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