Windows 10 October 2018 Update (1809) Still Flawed, Incompatible With Some AMD GPUs

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Most of the time, a security update is either non-applicable or entirely moot. And yes, there's always risk of an update breaking "something"; in fact it occurs quite often. In fact, many enterprises with internal IT will vet updates before authorizing their deployment with tools like WSUS after they've been tested. And yes, even IT professionals will read the KB articles as well.

That said however, be aware that advice is a bit myopic on a forum such as this. For the grand majority of the population, they're not IT minded. In fact, most users just view the devices as an appliance. Turn it on, check e-mail, open a website, play multimedia, and turn it off. That's pretty much it. Everything else is just "magic". So when Microsoft tells the user their magic box has an important update, they'll do as the magic box commands of them.

As an IT professional myself, I can't in good faith tell people not to apply security updates. Yes, there's a risk of them breaking something. But that's far more preferential to ID theft; either from compromised security authentication, or data falling into the wrong hands. Which would you rather the general population risk? ID theft where they're having to clear up their credit and resolve major financial loss, or the loss of a laptop where it must be fixed professionally? The former is far more expensive and is a major time sucking endeavor to clear up. As someone that's known people having gone through it, they'd gladly pay 5 grand just to make the headache go away. A laptop doesn't' cost that much.