What version of cURL is on the computer?

You can find using the following command line statement.
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C:\>curl -V
curl 7.55.1 (Windows) libcurl/7.55.1 WinSSL
Release-Date: [unreleased]
Protocols: dict file ftp ftps http https imap imaps pop3 pop3s smtp smtps telnet tftp
Features: AsynchDNS IPv6 Largefile SSPI Kerberos SPNEGO NTLM SSL
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The download wizard for cURL from here;
https://curl.haxx.se/dlwiz/

For Windows (x64, x32)) these downlaods are available at the above site(https://curl.haxx.se/Windows):

curl version: 7.61.1 - SSL enabled SSH enabled
curl for 64 bit
Size: 3.0 MB
sha256: a544d2f7641f73ac41a2d439648337a4fe58753ae1f51562a4be8360cd475e79

curl for 32 bit
Size: 2.7 MB
sha256: 83316f9812e0f20d569fbe06e605de99ac373332c