When you run the Bold BI application after it has been installed, you may encounter an HTTP 500.19 error if your Microsoft.NET Core installation is corrupted.
Follow the given steps to repair the Microsoft .NET Core installation:
Go to Control Panel and select the Uninstall a program option.
In the next screen, search for Microsoft .NET Core 3.1.x – Windows Server Hosting.
Right-click the program and choose the Change option from the menu.
Select the Repair option in the dialogue box and wait for the process to finish.
After the repair is complete, try accessing the Bold BI site.
Note: If the Microsoft.NET Core Windows Hosting Bundle bundle is not already installed on your machine, download and install the Windows Hosting Bundle from this link.