![asp.net mvc - HTTP Error 500.19 - Internal Server Error (Module: CustomErrorModule, Error Code: 0x80070021) - Stack Overflow asp.net mvc - HTTP Error 500.19 - Internal Server Error (Module: CustomErrorModule, Error Code: 0x80070021) - Stack Overflow](https://i.stack.imgur.com/sprLT.png)
asp.net mvc - HTTP Error 500.19 - Internal Server Error (Module: CustomErrorModule, Error Code: 0x80070021) - Stack Overflow
![CMon 19.8 installed with IIS shows 'HTTP Error 500.19 - Internal Server Error, and Error Code 0x80070021', on load in web browser – NovaBACKUP Support CMon 19.8 installed with IIS shows 'HTTP Error 500.19 - Internal Server Error, and Error Code 0x80070021', on load in web browser – NovaBACKUP Support](https://support.novabackup.com/hc/article_attachments/4419356639633/mceclip4.png)
CMon 19.8 installed with IIS shows 'HTTP Error 500.19 - Internal Server Error, and Error Code 0x80070021', on load in web browser – NovaBACKUP Support
![CMon 19.8 installed with IIS shows 'HTTP Error 500.19 - Internal Server Error, and Error Code 0x80070021', on load in web browser – NovaBACKUP Support CMon 19.8 installed with IIS shows 'HTTP Error 500.19 - Internal Server Error, and Error Code 0x80070021', on load in web browser – NovaBACKUP Support](https://support.novabackup.com/hc/article_attachments/4419355478801/mceclip2.png)