After installation of SDL Tridion Sites 9 Content Manager, the GUI comes back with "HTTP Error 500.19 - Internal Server Error"
HTTP Error 500.19 – Internal Server Error..." when browsing Revit Server Administrator panel (or SVC files)
![HTTP Error 500.19 – Internal Server Error – Error Code 0x80070021 – Mubarik Ahmed – Integration Blog HTTP Error 500.19 – Internal Server Error – Error Code 0x80070021 – Mubarik Ahmed – Integration Blog](https://mubarikahmed.files.wordpress.com/2020/04/pic00.png?w=640)
HTTP Error 500.19 – Internal Server Error – Error Code 0x80070021 – Mubarik Ahmed – Integration Blog
![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_3.png)
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 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)
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 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_1.png)