Xampp 7.4+安装好后，启动Apache可能发生如下报错
(安装好之后，我什么都没有做，并且也没装IIS)
15:30:37 [Apache] Error: Apache shutdown unexpectedly.
15:30:37 [Apache] This may be due to a blocked port, missing dependencies,
15:30:37 [Apache] improper privileges, a crash, or a shutdown by another method.
15:30:37 [Apache] Press the Logs button to view error logs and check
15:30:37 [Apache] the Windows Event Viewer for more clues
15:30:37 [Apache] If you need more help, copy and post this
15:30:37 [Apache] entire log window on the forums有人说是80或443端口被占用了，可是我都没有装IIS，并没有占用这2个端口。
上面的报错说让看log
在Xampp面板->apache->logs按钮->Apache(error.log)中，可以看到，内部报错如下
PHP Warning: 'vcruntime140.dll' 14.0 is not compatible with this PHP build linked with 14.16 in Unknown on line 0这是一个C++支持包的问题
解决方法是
点这个网址：https://visualstudio.microsoft.com/zh-hans/downloads/
然后搜索“Microsoft Visual C++ Redistributable for Visual Studio 2019”
然后下载并安装。
如下图
