HTTP API Fails to start

Anyone know a way to reinstall Windows' HTTP API, need it up and running so I
can get the HTTPFilter service and others that depend on it functioning.

Starting the API from command prompt:

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>sc start http
[sc] StartService FAILED 1058:

The service cannot be started, either because it is disabled or because it
has no enabled devices associated with it.

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Any help here, much appreciated.