Created attachment 35303 [details] screen shots with more detail See attachment. Problem showing up in one line of code in the latest version of mod_ssl_ct.c Compiling via CMAKE works if I first comment line 1120 in the mod_ssl_ct.c file. But Apache httpd will not work with it since it seems to be a required line of code under win32. The offending line 1120 is... rv = apr_thread_create(&daemon_thread, NULL, sct_daemon_thread, s_main, pconf); The error code is C2440