Hi @Jojo Tang ,
TLS 1.3 is not yet supported in Windows 10 version 1903, it will be supported in later versions of Windows 10 or Windows 11.
TLS protocol version support
https://learn.microsoft.com/en-us/windows/win32/secauthn/protocols-in-tls-ssl--schannel-ssp-#tls-protocol-version-support
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Best regards,
Leon