You get an error "HTTP Error 500.21 - Internal Server Error Handler "PageHandlerFactory-Integrated" has a bad module "ManagedPipelineHandler" in its module list" when accessing ZyLAB Service Monitor web page.
This problem is related to the .NET framework not getting installed fully.
Running the following command in a DOS window from the 'C:\Windows\Microsoft.NET\Framework\v4.0.30319' folder, re-registers asp.net with IIS and enables the handlers required to run .net pages:
6.2 Service Pack 2
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