今天改了一下Apache的配置，然后重启，发现报错，然后再尝试把Apache安装成系统服务，还是报错，如下：

Installing the Apache2.2 service 
The Apache2.2 service is successfully installed. 
Testing httpd:conf . . . . 
Errors reported here must be corrected before the service can be started. 
httpd.exe: Syntax error on line 67 of C:/conf/httpd.conf: Cannot load C:/WINDOWS/system32/modules/mod_actions.so into server: The specified module could not be found. 

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奇怪了，之前都是好好的，查了好久，发现把ServerRoot改错了！