What you need to know before and after installing the preview
Fast Startup and Windows update
July 8th, 2013
Fast Startup: If had Fast Startup disabled because your Dual Booting to an earlier version of Windows, after upgrading to 8.1 you will find Fast Startup has once again enabled (Control Panel / System and Security / Power Options / Change what the power button do / Shutdown settings ).
Windows Update: If you’re like me, I disable Windows Update (Control Panel / System and Security / Windows Update / Change Settings / Choose your Windows Update settings is set to: Never check for updates). The reason being is that I like to perform an Image Backup of Windows just prior to installing any updates. Should something go wrong I can always restore Windows to just the way it was prior to installing the updates.
After upgrading to Windows 8.1 you will need to change your settings again as they will revert to the defaults.
Windows 8.1 - Preview - 4 Important Windows Updates
Open Windows Update in the Control Panel immediately after installing the 8.1 Preview (Control Panel / All Control Panel Items / Windows Update)
KB2863721 http://support.microsoft.com/kb/2863721 Windows Store app is not added to the correct category in Windows 8.1 Preview Symptoms Assume that you download a Windows Store app on a Windows 8.1 Preview-based computer. When you view the app in the All Apps view, the app is not added to the correct category.
KB2863723 http://support.microsoft.com/kb/2863723 Update improves SkyDrive video playback in Windows 8.1 Preview Summary This update resolves an issue that could cause glitches during playback of video files that are stored on SkyDrive.
KB2863846 http://support.microsoft.com/kb/2863846 Authentication issues when you use Windows Store apps that declare the Enterprise Authentication capability in Windows 8.1 Preview. Symptoms When you use Windows Store apps that declare the Enterprise Authentication capability in Windows 8.1 Preview, youexperience one or more of the following issues:
You are prompted for user credentials. You encounter authentication failures.
Windows 8.1 Preview - Why you should not install the preview on a PC you depend on for everyday use
June 6th, 2013
An ounce of prevention is worth a pound of cure:
As with any beta or preview there could be bugs. In addition when the final release becomes available those who have downloaded the preview will get the same Windows Update plus Windows Store notification. While their data and accounts will be preserved if and when they choose to install the free, final 8.1 release, all their apps must be reinstalled. As stated by Microsoft's Senior Product Marketing Manager; Michael Niehaus.
Do I need a product key to install Windows 8.1 Preview? If you install Windows 8.1 Preview through the Windows Store, you don't need a product key. If you download the ISO, you'll need to enter this product key: NTTX3-RV7VB-T7X7F-WQYYY-9Y92F.
Warning: Upgrading via the .ISO file changes your Windows 8 product key to the key you entered during the upgrade.
Scroll down and click on the "Get it now" button to start the process. Don't save the download file, run it and let 8.1 install and reboot on it own, no action is required on your part during the installation process.
Note: 8.1 is not currently available in all regions, where are you located?
Please note: If you are on Windows RT and have installed a language pack, please don’t install the Windows RT 8.1 Preview at this time. A fix is coming so check back soon.
If the Installer (KB2849636) reports it's already installed then go to the Start screen (tiles), open the Charms bar and all the way down the bottom (Almost off the bottom of the screen) there is a link to open the store. Click on it and this should start the Windows 8.1 download and installation for the preview.
2) Windows 8.1 Preview - Does not appear in Microsoft Store ( Credit: Michael. O )
Windows 8.1 Preview will not appear in Windows Store if your PC meets one or more conditions for which Windows 8.1 Preview is not supported. These conditions include:
•You are running Windows 8 Enterprise •You are running Windows 8 Pro activated with a Volume License •Your base language is not one of the 13 supported languages, and you found a workaround for installing the pre-requisite Windows Update.