"HTTP Error 500.31 - Failed to load ASP.NET Core Runtime" while running Bold BI in Windows environment

Bold BI is a ASP.NET Core web application. The ASP.NET Core Runtime is required to run ASP.NET Core applications. Hence, without have this installed in a machine, you cannot run the Bold BI application from it.

Step 1: Install the latest version of the .NET Core Runtime

The first step to resolving the Failed to load ASP.NET Core Runtime error is to install the .NET Core Runtime. To do this, follow these steps:

1. Visit the Microsoft .NET Core Runtime download page.

   • For Bold BI v6.1.8 or newer versions, please visit https://dotnet.microsoft.com/en-us/download/dotnet/6.0
     
   • For Bold BI v5.3.81 or earlier versions, please visit https://dotnet.microsoft.com/en-us/download/dotnet/3.1
     

2. Under the ASP.NET Core Runtime, click the Hosting Bundle option for the Windows OS. The ASP.NET Core Runtime installer will start downloading automatically.

3. Once the download is complete, run the installer to install the .NET 6 Hosting Bundle (.NET Core 3.1 Hosting Bundle for Bold BI v5.3.81 or earlier versions) on your machine.
   

Step 2: Restart your computer

After the installation is complete, it is recommended that you restart your computer to ensure that the changes take effect.

Step 3: Verify the installation

Once your computer has restarted, verify that the .NET Core Runtime is installed correctly by opening a command prompt and running the command "dotnet --version". This command should display the version of the .NET Core Runtime that is currently installed on your machine.

Step 4: Try running the Bold BI application again

If the installation was successful, try running your Bold BI application again. It should now load without any issues.