Accessing a TLS1.2 web server from Omnis Studio 5 on Windows 10

Doug Easterbrook doug at
Mon Sep 14 09:10:51 EDT 2020

hi Dik:

we got it working with Studip 5.2.3.x

it required some new components from Omnis support that linked in different SSL libraries, which we received as part of ODPP.  WE absolutely required those to connect to Credit card companies as part of PCI compliance since they need TLS 1.2 or later connections

For Mac, this was some web components that linked to the built in Mac security libraries

For windows, as I recall, it linked into something in the OS as well.   Exactly what, I don’t recall since this was about 6 years ago.

If my memory serves me right,  Omnis support did something with the omnis 6.1  ->  32 bit wesecure and weshared libraries in the omnis directory and back compiled them for studio 5.2.3

This patch still works on windows 10 and OSX  Mojave as I can still connect to TLS 1.2 sites

64 bit windows openssl will not work (since studio 5 is only 32 bit).

Doug Easterbrook
Arts Management Systems Ltd.
mailto:doug at
Phone (403) 650-1978

> On September 14, 2020, at 3:50 AM, Dik Langan <DikLangan at> wrote:
> Hi all,
> On the Omnis forum I found a OmnisDev reply by Doug Easterbrook which appears to come close to answering the issue I have but having installed OpenSSL I am getting errors when trying to call a web service hosted on an HTTPS server using TLS 1.2 from my Omnis Studio 5 code on Windows 10 so I think I am missing something.
> The reference conversation is here: "" and I have followed the steps (even tried installing the Win32 and Win64 versions of OpenSSL) and whilst the errors are different they all have the same cause by the look of it - I get:
> WebDevGetSecureError = 3020:error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version:.\ssl\s23_clnt.c:658:
> and
> 10084:error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version:.\ssl\s23_clnt.c:658:
> with the obvious common message "SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version". Now as I know the server I am connecting to is running TLS 1.2 I wonder if there is some way to configure OpenSSL that I am missing as it appears to be trying just "TLS 1"?
> If there is anyone out there with experience of getting Omnis 5 to talk to a server running TLS1.2 I would love some help please.
> Thanks
> Dik.
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