Delphi 7 Indy 9 Could Not Load Ssl Library | EASY – 2024 |

Here's an example of how to use SSL/TLS with Indy 9 in Delphi 7:

Instead of relying on third-party DLL distributions like OpenSSL, you can bypass Indy entirely for HTTP/HTTPS requests by leveraging Windows' built-in networking APIs. Wrapping WinINet or WinHTTP allows your application to delegate encryption directly to the Windows Operating System. This strategy automatically grants your legacy Delphi 7 application access to TLS 1.2 and TLS 1.3, provided the underlying Windows OS is updated. Summary Troubleshooting Checklist

Follow these steps in order to resolve the error and successfully initialize SSL in your Delphi 7 environment. 1. Download the Correct OpenSSL DLL Versions

Download the binaries for OpenSSL 0.9.6m or 0.9.7d . Extract the archive to find ssleay32.dll and libeay32.dll . 2. Place the DLLs in the Correct Directory Delphi 7 Indy 9 Could Not Load Ssl Library

Once you have the correct DLLs, you need to integrate them into your project.

By pairing the exact 32-bit OpenSSL 0.9.6 binaries with your deployment payload, you will resolve the initialization breakdown and restore functionality to your legacy Indy 9 implementation.

Verify that your Indy 9 SSL/TLS configuration is correct. Here's an example of how to use SSL/TLS

Which do you currently have in your folder?

Your Delphi 7 application is 32-bit. On a 64-bit Windows system (like Windows 10 or 11), 32-bit applications run under the subsystem. This means any DLLs you place in C:\Windows\System32 are actually 64-bit libraries, and your 32-bit app won't see them. For 32-bit compatibility, you must place your DLLs in the C:\Windows\SysWOW64 folder, or, as recommended, in your application's local directory.

The "Could not load SSL Library" error in almost always stems from a mismatch or absence of specific OpenSSL DLLs required at runtime Extract the archive to find ssleay32

Even if you are running your application on a 64-bit Windows OS, the compiled binary is 32-bit. Loading 64-bit DLLs will cause the initialization to fail silently, throwing the exact same "Could Not Load SSL Library" error. 3. Place the DLLs in the Correct Location

What or APIs is your application trying to connect to?

While matching Indy 9 with OpenSSL 0.9.6/0.9.7 will resolve the "Could not load SSL library" error, you will likely encounter an immediate secondary issue when connecting to modern web servers:

A simpler approach: Use TNetHTTPClient from Delphi 10+ – but that does not help Delphi 7. Instead, use by François Piette, which includes native Schannel support.