BUG: Internet Transfer Control (SP2) Username and Password Fails

• Microsoft Visual Basic Professional and Enterprise Editions for Windows, version 5.0
• Microsoft Visual Studio 97sp2

SYMPTOMS

The Internet Transfer Control included in Service Pack 2 for Visual Studio 97 is unable to make authenticated connections for either the HTTP or FTP protocols. Anonymous connections still work. If you try to specify the Username and Password, you will get the following error:

   Run-time error '35754'
   Unable to connect to remote host

CAUSE

This version of the control does not properly handle the Username and Password properties.

RESOLUTION

To restore this functionality temporarily, replace the Msinet.ocx included with SP2 with the Msinet.ocx on the Visual Basic 5.0 CD.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. We are researching this bug and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

Steps to Reproduce Behavior

1. Start a new Standard EXE project. Form1 is added by default.

2. From the Project menu, click Components, and select the Internet Transfer Control 5.0 into the project if it is not already loaded.

3. Place an Internet Transfer Control 5.0 (Inet1) on Form1 and add the following code:

         Private Sub Inet1_StateChanged(ByVal State As Integer)
          Dim vtData As Variant ' Data variable.
   

          Select Case State
          ' ... Other cases not shown.
          Case icError ' 11
              ' In case of error, return ResponseCode and
   
         ' ResponseInfo.
              vtData = Inet1.ResponseCode & ":" & _
              Inet1.ResponseInfo
   
          Case icResponseCompleted  ' 12
              Dim strData As String: strData = ""
              Dim bDone As Boolean: bDone = False
   
              ' Get first chunk.
              vtData = Inet1.GetChunk(1024, icString)
              DoEvents
   
              Do While Not bDone
   
                  strData = strData & vtData
                  ' Get next chunk.
                  vtData = Inet1.GetChunk(1024, icString)
                  DoEvents
   
                  If Len(vtData) = 0 Then
                      bDone = True
                  End If
              Loop
   
             MsgBox strData
          End Select
         End Sub
   
   

4. Place a CommandButton (Command1) on Form1 and add the following code:

         Private Sub Command1_Click()
             Inet1.UserName = "Username"
             Inet1.Password = "Password"
             Inet1.URL = "ftp://YourFTPServer"
   
             Inet1.Execute , "DIR"
        End Sub
   
   

5. From the Run menu, click Start (ALT, R, S) or press the F5 key to run the program. Click the Command1 button, and you will see error described above.

Keywords          : PrgCtrlsStd vb5all
Technology        : kbInetDev
Version           : WINDOWS:5.0; WINDOWS NT:97sp2
Platform          : NT WINDOWS
Issue type        : kbbug