HTTP Error 500.19 - Internal Server Error: The requested page cannot be accessed because the related configuration data for the page is invalid.
![applicationhost.config] [unlock sections] HTTP Error 500.19 - Internal Server Error - Error Code: 0x80070021 | Sarah的部落格- 點部落 applicationhost.config] [unlock sections] HTTP Error 500.19 - Internal Server Error - Error Code: 0x80070021 | Sarah的部落格- 點部落](https://dotblogsfile.blob.core.windows.net/user/wei-hsuanlin/45773af7-132c-43e3-8f1b-07029a149e1c/1660096650.png.png)
applicationhost.config] [unlock sections] HTTP Error 500.19 - Internal Server Error - Error Code: 0x80070021 | Sarah的部落格- 點部落
![Getting HTTP Error 500.19 - Internal Server Error when trying to access old ASP classic web site on Windows 2016 Server - Microsoft Q&A Getting HTTP Error 500.19 - Internal Server Error when trying to access old ASP classic web site on Windows 2016 Server - Microsoft Q&A](https://learn.microsoft.com/api/attachments/99208-http-error.jpg?platform=QnA)
Getting HTTP Error 500.19 - Internal Server Error when trying to access old ASP classic web site on Windows 2016 Server - Microsoft Q&A
![Web Portal - HTTP Error 500.19 with Error Code 0x80070021 When accessing WebPortal (Windows 2008 - Vista - 7). – Print Manager Web Portal - HTTP Error 500.19 with Error Code 0x80070021 When accessing WebPortal (Windows 2008 - Vista - 7). – Print Manager](http://www.printmanager.com/management/files/FAQ_Resources/97/97_2.png)