From InfoWorld:
I reported earlier this morning that we're seeing "Unsupported hardware" and "Windows could not search for new updates" messages from people who are running Windows 7 and 8.1 on Intel Kaby Lake and AMD Rizen-based computers. It's part of Microsoft's long-threatened ban on Win7 and 8.1 updates for newer seventh-generation processors.
Now there's a report of similar blockages on an older AMD A6-8570 processor. It isn't clear if there's a bug in the detection logic, or if Microsoft's going to block Win7 and 8.1 updates on some older sixth-generation processors.
The report comes from poster The Heretic on [H]ardForum:
Well it isn't just the Ryzen that's going to get whacked. I came into work this AM to look at one of the system's I'd re-imaged with Win7 Pro and started downloading updates to it as I left yesterday. I was greeted with Microsoft's gotcha.The screen he posts clearly says the block took place on an AMD Pro A6-8570 system.
[...]
AMD's product page for the AMD Pro A6-8570 clearly states that this is an older, sixth-generation chip.I know that one should always hesitate to ascribe to malice that which can adequately be explained by incompetence, but when you consider just how much anti-consumer bullshit Microsoft has pulled in their efforts to force Windows 7 & 8 users to switch to Windows 10, I honestly think that we can just assume that this is deliberate on Microsoft's part. AMD really did a deal with the devil, when they agreed to let Microsoft lock their silicon to the products of Microsoft's choosing, and they should really be rethinking that decision, if they're not already.