Delphi 7 Indy 9 Could Not Load Ssl Library [ Verified · 2025 ]

4. Check for External Dependencies (Microsoft Visual C++ Runtimes)

Do not try to "modernize" by dropping in OpenSSL 3.0. Do not expect Windows to provide it. Instead, treat these two DLLs ( libeay32 and ssleay32 ) as permanent artifacts of your application, ship them in your install folder, and they will continue to work for another decade. Delphi 7 Indy 9 Could Not Load Ssl Library

Download Dependencies.exe (a modern open-source tool) or the old depends.exe . Drag your ssleay32.dll into it. Look for missing dependencies: Instead, treat these two DLLs ( libeay32 and

If another application in your system path has different versions of libeay32.dll or ssleay32.dll , it can cause conflicts. Using local application-folder DLLs prevents this. Look for missing dependencies: If another application in

For developers maintaining legacy systems, few error messages inspire as much immediate dread as the infamous: when using Indy (Internet Direct) components in Delphi 7.

// The hack for Indy 9: IOHandler.SSLOptions.Method := sslvTLSv1; // Lie to Indy, but override via SSL_CTX // Actually, you need to patch IdSSLOpenSSLHeaders.pas to support sslvTLSv1_2. // Better yet: Upgrade TIdSSLIOHandlerSocketOpenSSL to use SSL_CTX_set_max_proto_version. end;

Because Delphi 7 and Indy 9 are legacy technologies, they rely on specific, older versions of OpenSSL. Modern operating systems do not include these files by default, and using the wrong DLL versions will instantly trigger this failure. The Root Causes of the Error