Using .NET COM component in ASP (classic) application

Recently I had to reinstall an old ASP (classic, not ASP.NET) application which used COM components which were made in .NET.
Unfortunately the components could not be instantiated (via Server.CreateObject) and I would always get an error 80131700.
The solution was that you need to enable the .NET CLR on your Application Pool even though your are not normally using the .NET runtime.
Hopefully this helps someone else who has the same problem.

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