Delphi 7 Indy 9 Could Not Load Ssl Library May 2026

Indy 9 is an older suite and is strictly incompatible with modern OpenSSL versions (1.1.x or 3.x).

with modern OpenSSL 1.1.x or even standard 1.0.x builds. It requires specific versions of two files: ssleay32.dll libeay32.dll For Indy 9, you typically need the OpenSSL 0.9.6 series. You can find these archived on the Indy Fulgan SSL Archive Delphi 7 Indy 9 Could Not Load Ssl Library

Before swapping files, use Indy’s built-in diagnostic tool to see the load failed. Call the WhichFailedToLoad function from the IdSSLOpenSSLHeaders unit immediately after the error occurs. If it returns empty: Indy 9 is an older suite and is

The "Could Not Load SSL Library" error typically occurs due to one of the following reasons: Ensure that you have set the SSLOptions property

IdHTTP1.IOHandler := IdSSLIOHandlerSocket1; IdSSLIOHandlerSocket1.SSLOptions.Method := sslvTLSv1; // Indy 9 supports up to TLS 1.0 Use code with caution. Copied to clipboard 5. Troubleshooting with WhichFailedToLoad

Solution 4: Upgrade Indy (Most Robust, Highest Effort)

Step 3: Code Verification (Dynamic Linking)

Version Mismatch

: Indy 9 generally requires OpenSSL 0.9.6 DLLs. Modern versions of these DLLs lack specific functions (e.g., exports ending in _indy ) that Indy 9 expects.