HTTPS: Setup digest or NTLM authentication
NTLM authentication works only on Windows. If you need to use NTLM ("Windows Integrated") authentication, set UseNTLMAuth property of TElHTTPSClient class to True. Note that NTLM authentication is almost never used on public hosts. It's mostly used in Intranets. By default Windows credentials are used, but you can specify custom username and password for NTLM authentication as well.