Many Microsoft Windows 7 users are reporting a pair of issues after this week’s Patch Tuesday release. They are serious enough that I would recommend avoiding updating your system until they get sorted. The issues stem from KB4480970, and the security-only update, KB4480960, for Windows 7 SP1 and Windows Server 2008 R2 SP1. The updates seem to cause serious network issues for some people. Network shares can no longer be used via SMBv2 in certain environments. That is a major #Fail as SMBv2 is used by a whole lot of people because SMBv1 is very insecure.
The second issue revolves around the fact that Windows 7 PCs all over Hell’s half acre are reporting themselves as being “Not Genuine”. As in you’re running pirated software when you actually aren’t. Microsoft has since confirmed that “some users are reporting the KMS Activation error.” The good news here is that Microsoft is working on a fix and will provide an update when it’s available. But until fixes for either issue are available, I would recommend avoiding Microsoft’s latest updates as clearly their software quality issues which I’ve talked about before extend beyond Windows 10.