QSslSocket: SSL support not available despite OpenSSL DLLs present (Qt 5.2.1, Windows, MinGW)

Dear_Username

I'm developing a Qt application on Windows using Qt 5.2.1 with MinGW 4.8.0. I need to perform HTTPS requests, but my application fails to detect SSL support.

Here’s what I’ve done:

I placed libeay32.dll and ssleay32.dll (from OpenSSL 1.0.2u) next to the built .exe file.
I included OpenSSL headers and libraries in my project.
I verified that QSslSocket::supportsSsl() returns false, and both sslLibraryBuildVersionString() and sslLibraryVersionString() return empty strings.
The debug console shows:

Supports SSL: false
SSL library version (runtime): ""
SSL support available: false

I also encountered runtime errors indicating missing Qt DLLs (Qt5Core.dll, Qt5Gui.dll, Qt5Widgets.dll).
enter image description here

Project structure:

Qt 5.2.1 with MinGW
Windows 10
MinGW 4.8.0

My question:

What else should I configure or fix to make QSslSocket recognize OpenSSL and enable HTTPS support?

Is it possible that Qt 5.2.1 was built without OpenSSL support? If so, how can I verify or work around that (e.g., rebuilding Qt or switching to libcurl)?

Christian Ehrlicher

Use a debugger and set a breakpoint in qsslsocket_openssl_symbols.cpp/tryToLoadOpenSslWin32Library: https://code.qt.io/cgit/qt/qtbase.git/tree/src/network/ssl/qsslsocket_openssl_symbols.cpp?h=5.3