After installing Plato within Internet Information Server (IIS) you may encounter a HTTP Error 502.5 - Process Failure error when attempting to launch your IIS web site hosting Plato for the first time.

The Error

You can see the HTTP Error 502.5 - Process Failure that would appear within your web browser when you attempt to launch Plato below...

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Cause

This error typically occurs if the correct version of the .NET Core Run time is not installed on your server. You can download the latest .NET Core run time from Microsoft's .NET download page.

Plato is NOT a self-contained deployment and at minimum requires the .NET Core 2.1 Run time to be installed on the target server.