Delphi 7 Indy 9 Could Not Load Ssl Library May 2026

Finding yourself stuck with the "Could Not Load SSL Library" error in Delphi 7 with Indy 9 is a classic headache. It almost always boils down to a mismatch between what Indy expects and what is actually on your system.

6. Summary Checklist

• [ ] Download OpenSSL 1.0.2u (32-bit).
• [ ] Extract libeay32.dll and ssleay32.dll.
• [ ] Place DLLs in the application's root folder.
• [ ] Ensure TIdSSLIOHandlerSocket is assigned to the IOHandler property of TIdHTTP.
• [ ] Set SSLVersions to [sslvTLSv1] (Indy 9 defaults are often outdated).

depending on your IdSSLOpenSSLHeaders.pas version. Delphi 7 Indy 9 Could Not Load Ssl Library

Use Dependency Walker (or Dependencies)

Download Dependencies.exe (a modern open-source tool) or the old depends.exe. Drag your ssleay32.dll into it. Look for missing dependencies: Finding yourself stuck with the "Could Not Load

Bitness Mismatch: Delphi 7 produces 32-bit applications, so you must use 32-bit (i386) DLLs.  Critical Solution: Using the Correct DLLs  [ ] Download OpenSSL 1

Then, a pair he found in a folder named "Stunnel_Backup." The application loaded. He saw the splash screen. His heart leaped. Then, a second error: Project AceDispatch.exe raised exception class EIdOSSLCouldNotLoadSSLLibrary with message 'SSL_CTX_new: error:140A90F1:SSL routines:SSL_CTX_new:version number mismatch'.