WNetAddConnection2 returns ERROR_LOGON_FAILURE on expired Password

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Windows

Hello,

I have the following problem. I try to make a SMBConnection with WNetAddConnection2.
Wenn the password from the user is expired, on my test machine I get the extended error with NERR_PasswordExpired.
On the production machine I get the return code ERROR_LOGON_FAILURE.
I've no idea where is the difference...
Can anybody help me?

Greets,

Florian