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SOAP error

SOAP error

I developed an ASP.NET Web Service working with a VB 6.0 application by SOAP.
Now, I'm changing 80 port(http) to 443 port(https) and I have some doubts:

When I check Require secure channel(SSL) on Secure Communications (IIS configuration) must I
choose "Ignore cliente certificates" on Client certificates options or may I choose "Accept client
certificates" or "Require client certificates" instead?

When I try to initiate SOAP(.MSSoapInit) on VB application, an error shows up(only the first time.
after that the application runs OK). I chose "Accept client certificates" on Client certificates options

-- Visual Basic errors

WSDLReader:XML Parser failed at linenumber 0, lineposition 0, reason is: Security problem.
HRESULT=0x1: Incorrect function.
- WSDLReader:Loading of the WSDL file failed HRESULT=0x80070057: Incorrect parameter.
- Client:One of the parameters supplied is invalid. HRESULT=0x80070057: Incorrect parameter.


-- SOAP errors

WSDLReader:XML Parser failed at linenumber 0, lineposition 0, reason is: Security problem.

After the first time I can run SOAP/VB application (the above error doesn't show up ever more), but
when I try to execute a SOAP function another error shows up:

-- Visual Basic errors

Connector:Bad certificate. HRESULT=0x800A1529 - Client:An unanticipated error occurred during
the processing of this request. HRESULT=0x800A1529 - Client:Sending the Soap message failed or
no recognizable response was received HRESULT=0x800A1529 - Client:Unspecified client error.


-- SOAP errors


Connector:Bad certificate.

What's wrong? Is it possible to solve this problem? How can I do?
Must I always choose "Ignore cliente certificates" on Client certificates options?
Thanks in advance.

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