WNetAddConnection2 returns error 86, Net Use Works

Question

I try to connect to the c$ share on an old Windows NT4 SP6 Machine via WNetAddConnection2. This is the Code i used:

int main() {
    NETRESOURCE nr;
    std::string remote{"\\\\192.168.178.22\\c$"}
    nr.dwType = RESOURCETYPE_ANY;
    nr.lpLocalName = NULL;
    nr.lpRemoteName = remote.data();
    nr.lpProvider = NULL;

    auto res = WNetAddConnection2(&nr, "test", "User", NULL);

    if (res == NO_ERROR) {
        std::cout << "Connected\n";
    } else {
        std::cout << res << '\n';
    }
}

This just give me the Error Code 86 which stands for:

The specified network password is not correct.

If i try to mount the Share via net use like so:

net use \\192.168.178.22\c$ /user:User

And give the same Password when prompted for it the connection is successfully made.

Is there something wrong with my Code? Or do i miss something? Because for me it's strange that the Connection works with net use but not with the WNetAddConnection2 Function.