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Editorial Team
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Asked: 2026-05-16T16:29:14+00:00

How can I force my .Net application to establish connection with some Java Web

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How can I force my .Net application to establish connection with some Java Web Service using TLS instead of SSL ?
Proxy to Web Service is generated as standard Web Reference (not WCF).
Web Service url is https://…….. .

Some details:
From my .Net 4.0 application I’m invoking Java Web Service hosted on JBoss & Redhat.
This web service works properly in 50% runs, when error occurs exception message is
‘An existing connection was forcibly closed by the remote host‘.

When I looked at network communication with WireShark:

  • all error connections are established with SSL ‘Hello Client’ and being reset.
  • Success connections are established with TLSv1 ‘Hello Client’

so forcing .Net to use TLS could resolve this strange issue.

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1 Answer

  1. Editorial Team

    The place to start would be ServicePointManager.SecurityProtocol. This allows one of the SecurityProtocolType values to be set: Ssl3 or Tls, the later is documented:

    Specifies the Transport Layer Security (TLS) 1.0 security protocol.

    TLS assumes that a connection-oriented protocol, typically TCP, is in use. The TLS protocol is defined in IETF RFC 2246.

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