>>>>I am attempting to update a new computer OS from Windows 8 to Windows 8.1 (tell me if I shouldn't do it).
>>>>But when I click on the Microsoft Store I see a bunch of stuff that MS is trying to sell but no tile for Windows 8.1 upgrade? And no search button.
>>>>What am I missing?
>>>>TIA
>>>
>>>Anyone knows where you get Windows 8 product key for a PC that came with Windows 8 preinstalled? I am trying to install 8.1 and it asks for the product key. TIA.
>>
>>One would think you wouldn't need it if you're upgrading from 8 to 8.1. Maybe you downloaded a clean-installation version?
>>
>>Does the upgrade appear in Windows Update?
>>
>>http://www.toshiba.eu/innovation/generic/windows8_1-upgrade-stepbystep/
>
>The fist step in the page you posted is to go to the Windows Store and get the update to Windows 8.1 there. But when I click (from the new Toshiba Windows 8) on Store tile/button, I see no Microsoft Store. This was the first question in this thread that I asked. Thank you.

I'd be inclined to try Windows Update. Dunno about Win8 but in Server 2012 it's in Control Panel: Metro...Control Panel...type "upd" in the search box should get you there.