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> disabled RC4 where possible

I'm curious. Under what circumstances would it be _not_ possible to disable RC4?

Is this in case there is a Windows 98 machine running somewhere in the network?

In my experience it's always been legacy hardware or industrial automation where it would cost millions to update the equipment / software. Simply limiting the blast radius of those systems and isolating them on the network into their own security zone is always less expensive and thus the perfectly reasonable solution.

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