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Error 12029 with WININET in VB6 SP5

Posted on 2004-03-31
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Last Modified: 2013-11-13
I have what I think is a relatively simple piece of code.  It uses WININET
to "contact" a URL and then grab the ASP.NET generated XML.   As is typical
with many of these bugs that make me tear at my hair, this works on two
hundred machines, and fails on one.   Therefore I am thinking it to be
environmental.  Here is the code:

===============================

    hOpen = InternetOpen(scUserAgent, INTERNET_OPEN_TYPE_PRECONFIG,
vbNullString, vbNullString, 0)

    If hOpen = 0 Then
        glErrNbr = Err.LastDllError
        gsErrMsg = "Error in InternetOpen call"
        GoTo GetSourceErr
    End If

    hOpenUrl = InternetOpenUrl(hOpen, URL, vbNullString, 0,
INTERNET_FLAG_RELOAD, 0)

    If hOpenUrl = 0 Then
        glErrNbr = Err.LastDllError
        gsErrMsg = "Error in InternetOpenURL call"
        GoTo GetSourceErr
    End If

===============================

InternetOpenUrl raises the error 12029.

The call is to an https: address.

That same URL functions perfectly on that machine if pasted into Internet
Explorer.  The machine is WindowsXP, OfficeXP, IE 6.0.2800.1106.

Note that this same user has an issue using a Wise Installer web-deployed
install.  It ==must== be some sort of setting like it is trying to use a
non-existent proxy (???).  Is it not so?

Again, the same URL that fails with Wininet in
code works in IE.  

He can do other tasks like surf and fetch email.

I'd appreciate any ideas at all on what to look for.

Thank you, all.

John



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Question by:JXCovert
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LVL 28

Expert Comment

by:Ark
ID: 10729053
Seems it's due to the wrong proxy settings.
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Accepted Solution

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Ark earned 2000 total points
ID: 10729069
PS
To work with proxy correctly, change INTERNET_OPEN_TYPE_PRECONFIG to INTERNET_OPEN_TYPE_DIRECT
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Author Comment

by:JXCovert
ID: 10729104
According to the customer, there is no proxy.  It's a home network <rolling_eyes/>, wireless.  Two machines, neither can hook up via WININET, though both can surf to the same URL in IE.

Odd as can be.
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LVL 28

Expert Comment

by:Ark
ID: 10729114
Did you try to change InternetOpen flags?
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