Win10 th2 can't update how to do

Win10's first major update TH2 fall update has now started to push, many users have not received the update, and many users have encountered problems during installation, you can refer to the following to solve. The first thing to note is that the Insider users who have upgraded to 10586, you are now using the official version of TH2, no need to update.
Check if delayed upgrade is set up
Regarding the problem of not receiving push, on the one hand, it may be because your system has just been upgraded from old versions such as Win7 and Win8.1, and is still in a month of experience. period "within, in order to ensure that version before you can have to go back to return to the Microsoft temporarily push TH2 update;

another reason may be that you have chosen in the system" to postpone upgrade ", as shown below As shown, if you are sure to check this option, please cancel and try again.
It may be caused by insufficient space or SD card
As for the installation error, please try to make enough space for the system partition. If you have upgraded the system before, you can clean it up and use the cleaning software to complete it. Deep cleanup can also be performed.

Another case might be that Microsoft has found an SD card installation failure causes problems, especially should pay attention to tablet type device, remove the device SD card.
Download the image upgrade yourself
If you can't find the reason, the best way is to download the image to upgrade. Even with Windows Update, the system needs to download a complete system image, except that ESD is smaller than ISO.
The only thing you need to pay attention to when downloading the image upgrade yourself is the version correspondence. Make sure that the downloaded image is consistent with the version of the system you are using. And note that the Home and Family Chinese versions are two different versions.