>>>> "There was a situation where the update actually patched a security hole that a vendor was using to allow access to the portal," he explains. "An update came through and closed that gap, and [then] users that previously had access to that software could no longer get into the portal <<<<
That's a classic example of the problem, software written so badly it uses a security flaw to make a feature work, instead of doing it right the first time, just do bodge job after bodge job and blame Mircosoft when it breaks.
There are so many applications where the code base of the latest Windows 10 ready version is barely Windows XP complaint and relies entirely on Windows backwards compatibility to function, meaning even the most minor of security fixes brings down the whole house of cards.
With Windows 7 going end of life in fifteen months well see another wave of lazy or under funded developer telling their customers we don't support Windows 10, and saying you have to stick to Windows 7 to use our product, despite the fact Windows 10 will have been around for four and a half years by that point, and disregarding Windows 8 has been around even longer, because they didn't bother support it either because no one liked it. In the same way they did with the shift from 32bit Windows XP to 64bit Windows 7, hey ignored Vista and because XP was still supported they did bother updating their code to be Window 7 compatible let alone 64bit compatible until it was too late.