FastCGI Error 
The FastCGI Handler was unable to process the request. 
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Error Details: 

Error Number: 5 (0x80070005). 
Error Description: 拒绝访问。 
HTTP Error 500 - Server Error. 
Internet Information Services (IIS) 

这个错误是由于在解压PHP之后,没有对IIS启动帐户赋予该目录的读取和运行 权限.修改文件夹安全属性,问题解决.

FastCGI Error
The FastCGI Handler was unable to process the request. 
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Error Details:

The FastCGI process exceeded configured activity timeout 
Error Number: 258 (0x80070102). 
Error Description: ????????×÷???±?? 
HTTP Error 500 - Server Error.
Internet Information Services (IIS)

解决方法：明显是FastCGI超时，打开C:/WINDOWS/system32/inetsrv/fcgiext.ini，添加或修改 以下内容

[Types]
php=PHP

[PHP]
ExePath=C:/PHP/php-cgi.exe
InstanceMaxRequests=10000
EnvironmentVars=PHP_FCGI_MAX_REQUESTS:10000
RequestTimeout=500
ActivityTimeout=900