Problems updating windows 8 to 8 1
Windows 8.1 is an update to Windows 8, much in the same way that service packs were updates to previous versions of Windows like Windows 7.This major update is completely free to all Windows 8 owners. The key is that you just need to mess around with the Windows Update settings and manually force an update to fix this problem.
Change Install updates automatically to Never check for updates. Uncheck Give me recommended updates the same way I receive important updates. Uncheck Give me updates for other Microsoft products when I update Windows.
But you can force Windows 8.1 Preview to upgrade to Windows 8.1 RTM with the help of following tutorial: If your Windows 8.1 download failed in the middle or at the end and you were unable to install Windows 8.1 or create installation media of Windows 8.1, you'll need to re-download Windows 8.1 using Upgrade Assistant.
But if you try to re-run Upgrade Assistant, it'll ask you to purchase Windows 8.1 again even if you have already purchased it.
Sometimes you may also get "Access Denied" error message in Upgrade Assistant.
If you are facing these problems, check out following tutorial: If you are unable to download Windows 8.1 from Windows 8 Store and it gives you error message that the update is not applicable to your computer or country, you can try the steps given in following tutorial: When you try to install Windows 8.1 using Windows 8 product key, you receive invalid or incorrect product key error message even if your product key is genuine.