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My Delphi 10.4 application uses a HTTPRIO-component to communicates with SOAP REST Server over HTTPS. It is installed on more then 100 PC's, and it works fine almost everywhere. However, I now have 2 clients that get the following error:

"Error sending data: (12030). De verbinding met de server is niet normaal beëindigd" (--> The connection to the server did not end normally )

The user has a Windows 7 Home Premium machine (I have Windows 10 Pro). Firewall was disabled.

If I copy the complete application-dirctory with all the dll's to my machine everything works fine.

Where should I start looking for a solution? Which properties of the HTTPRIO-component could have an effect on this behaviour? Or which dll's?

I checked the article Peter Wolf suggested but without succes. (The register-settings should be OK). All the registers are present with the right values, but the windows update could not be installed. Also downloading the stand-alone update KB3140245 fails. It juist says "failed".

any hints are welcome!

kind regards,

Dirk Janssens

Dirk Janssens
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    I guess this is because the Win7 machine does not support security protocol required by the endpoint or it is not enabled. See [Update to enable TLS 1.1 and TLS 1.2 as default secure protocols in WinHTTP in Windows](https://support.microsoft.com/en-us/topic/update-to-enable-tls-1-1-and-tls-1-2-as-default-secure-protocols-in-winhttp-in-windows-c4bd73d2-31d7-761e-0178-11268bb10392) – Peter Wolf Jan 02 '23 at 16:53
  • Regarding your edit: the registry keys are present, **and** the update from the linked article has been **installed**? (check the file date / version information) – mjn Jan 03 '23 at 11:49

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