Win8 can not get the reasons and solutions for Win8.1 update

Microsoft has recently officially pushed all the Win8 users to update the latest Win8.1 version. Under normal circumstances, Win8 users can get Win8.1 updates in the Win8 app store, but some users have recently received feedback. I didn't find the update entry in the Win8 app store. What's going on?
Win8 can not get Win8.1 update reasons and solutions

Get Win8.1 update failure may be the following reasons:

1, installed before the early WCP, WPR version Win8.

2, Windows Professional Edition (VOL Large Client Edition), Windows 8 Professional Edition activated by KMS method

3, Windows 8 Enterprise Edition

4, using MSDN ISO Mirrored installation, but Windows 8 version activated with multiple activation keys.

Users using these versions, especially Windows 8 Enterprise, are advised to re-download the latest Windows 8.1 image for a fresh install.

But for Windows 8 Professional (VOL) users, try the following methods to get updates from Microsoft:

First of all, I recommend that you back up your Windows 8 activation information, then Replace the previous VOL version key with the retail version key. There are a lot of online ones. Just find one. You don't need a key that can be activated. The purpose of using it is to make the Windows App Store appear 8.1 push update.

Then, WIN + X, run the command prompt CMD, slmgr /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX” as administrator, note that there is a space between the IPK and the key.

At this time, the computer will prompt to activate, ignore him, run the command prompt CMD in this administrator, enter “wsreset”, clear the store cache, restart the computer. Open the link: http://windows.microsoft.com/en-us/windows/buy, click “get the update”, you will enter the application store to see the push information of Windows 8.1, and then update.

Tip: Before you update, it is recommended that you fully install the updates that Windows Update pushes, especially the KB2871839 update.

Extension link: Win8.1 can not be activated How to do Win8.1 can not be activated solution