Unable to open EPS 7.6 console page |HTTP Error 500.19 - Internal Server Error 0x80070021 | : Seqrite Support & Services - Help Desk Software by Vision Helpdesk
Web Portal - HTTP Error 500.19 with Error Code 0x80070021 When accessing WebPortal (Windows 2008 - Vista - 7). – Print Manager
IIS Errors and HRESULT error codes | .NET and things
TMS HTTP Error 500.19 - Internal Server Error - Cisco Community
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
windows server 2012 - IIS 8 asp.net mvc HTTP Error 500.19 - Server Fault
How to fix the 0x80070021 CMon 19.8 website load error - YouTube