23:21:36  [Apache] Problem detected!

23:21:36  [Apache] Port 443 in use by ""C:\Program Files\VisualSVN Server\bin\VisualSVNServer.exe" -k runservice -C "LoadModule log_visualsvn_module bin/mod_log_visualsvn.so" -E nul" with PID 2236!

23:21:36  [Apache] Apache WILL NOT start without the configured ports free!

23:21:36  [Apache] You need to uninstall/disable/reconfigure the blocking application

23:21:36  [Apache] or reconfigure Apache and the Control Panel to listen on a different port

443端口即网页浏览端口，主要是用于HTTPS服务，是提供加密和通过安全端口传输的另一种HTTP。

443端口被占用，apache无法监听443端口，该如何解决呢？ 

在/xampp/apache/conf/extra/httpd-ssl.conf 

把Listen 443 修改为 444（可自定义）

XAMPP在启动apache时443端口被占用