Cannot load modules/mod_ssl.so into server

Question

I'm trying to set SSL to my localhost server with WAMP. (https://localhost)

I followed this Youtube course: https://www.youtube.com/watch?v=TH6evGKgy20

But finally, I got this error by running "httpd -t" command in Apache folder:

D:\Programs\wamp3\bin\apache\apache2.4.17\bin> httpd -t
httpd: Syntax error on line 173 of D:/Programs/wamp3/bin/apache/apache2.4.17/conf/h
ttpd.conf: Cannot load modules/mod_ssl.so into server: The operating system cannot
run %1.

What's the problem?

Answer 1

The problem was OpenSSL version.

I was installed Win 32 version before, but I should install Win64 OpenSSL v1.0.2j Light (from here). Also, "Copy DLLs to Windows System directory" option must be checked in the installation wizard.

After installing it, everything worked correctly!

Answer 2

I'd a problem with running mod_ssl on simply oldest Apache/2.4.41 version on Windows Server 2016, witch perfect works on Windows 10 Pro. Fix solution for WS2016 consist in updating to the new Apache/2.4.43 or copying mod_ssl.so from Apache/2.4.43 to Apache/2.4.41 modules.

Note: that Update httpd 2.4.41 with OpenSSL 1.1.1.e! Make sure the run time variable OPENSSL_CONF is set. Be sure you installed latest Visual C++ Redistributable for Visual Studio 2015-2019