Select the TIdHTTP component, go to the Object Inspector, and set its IOHandler property to your TIdSSLIOHandlerSocket instance. Programmatic Setup Example:
Indy 9 only natively supports up to TLS 1.0.
Ensure your Indy components are explicitly assigned to use the SSL IOHandler. If you are using TIdHTTP , you must pair it with a TIdSSLIOHandlerSocket .
Because Indy 9 is obsolete, it cannot easily support modern TLS 1.3 requirements. If you are struggling with outdated libraries, the recommended long-term solution is to migrate to a newer version of Delphi (e.g., Delphi 11/12) and update to , which has native support for newer OpenSSL versions. Summary Checklist Are ssleay32.dll and libeay32.dll in the .exe folder? Are the DLLs 32-bit? Is TIdSSLIOHandlerSocket linked to the client component? Are you using OpenSSL version 0.9.8 or 1.0.0? If you are encountering this issue, I can help you: Delphi 7 Indy 9 Could Not Load Ssl Library
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To resolve the "Could Not Load SSL Library" error, try the following solutions:
Ensure you are using 32-bit OpenSSL DLLs, as Delphi 7 is a 32-bit IDE. Select the TIdHTTP component, go to the Object
Delphi 7, released in 2002, is widely regarded as one of the most stable and beloved versions of Borland’s flagship RAD environment. Paired with Indy 9 (which was the standard networking library at the time), it powered thousands of email clients, FTP tools, and HTTPS-enabled applications. However, as the internet transitioned almost exclusively to TLS 1.2 and above, and as Windows Server and client operating systems evolved, this error began plaguing developers trying to keep their legacy applications alive.
Indy 10 is fully compatible with Delphi 7 and actively supports newer OpenSSL versions (the 1.0.2 branch, specifically versions like 1.0.2u ). OpenSSL 1.0.2 supports TLS 1.2 connections. You will need to remove the native Indy 9 packages from your Delphi IDE components list and compile/install the Indy 10 package source.
Windows follows a specific search order when an application calls external libraries. To ensure your application loads the correct version without system conflicts: If you are using TIdHTTP , you must
Fixing the "Could Not Load SSL Library" Error in Delphi 7 with Indy 9
: Indy 9 generally supports OpenSSL v0.9.6 through v1.0.2u . It does not natively support OpenSSL 1.1.x or 3.x.
To tell Indy where to find the OpenSSL libraries:
To resolve the "Could Not Load SSL Library" error in Delphi 7 with Indy 9, try the following solutions:
