An unknown fastcgi error occurred in IIS: 0x80070005

Error details ：

Practical solutions ：
Application pool -> Advanced settings -> identification ： Default ApplicationPoolIdentify It is amended as follows LocalSystem.

Reference resources ： https://github.com/Microsoft/PTVS/issues/2024

0x80070005 There are theory is php The directory has no permissions
The specific solutions are as follows ：

Set these three properties , Others say , Check the item of complete control , But I tried , It didn't work .
Reference resources ：FastCGI Error Number: 5 (0x80070005).