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I have a MSDN Subscription and have installed Windows 8 Professional using my Volume License version of Windows 8.
The Windows 8.1 update does not show up in Windows Store. This is a known problem.
What is the appropriate, easiest way to upgrade this installation to Windows 8.1?
You get it from MSDN by clicking on Subscriber Downloads, of course. – Michael Hampton – 2013-10-20T16:03:16.110
@MichaelHampton Sure, the ISO images are there. Am I supposed to boot from one of those? I don't want to reinstall from scratch, I want an upgrade. – Klas Mellbourn – 2013-10-20T16:13:39.897
1Mount it and run the setup.exe, I'd imagine. – None – 2013-10-20T16:26:37.787