Windows 8.1 Patches Won't Install Without April Update
 

I guess this is one way to force make sure people update to update their operating system. "The majority of Windows 8.1 customers have installed the Windows 8.1 update," Microsoft spokeswoman Jill Lovato told CNET in an email on Monday. "For those who have not yet made the transition, those newer updates offered with this month's Update Tuesday will be considered 'not applicable.' Customers' infrastructure will continue to function; however, it should be noted that they can't consume any further updates until they apply the Windows 8.1 Update."

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