During installationto him 8.1 Windows Update some seem to appear errors. It functional system displays the coded errors 80070020, 80073712And 0x800f081f and the installation usually stops progressing.
However, in Microsoft forums the user Andrew B has published a very simple solution that will allow you to install it Windows Update 8.1 with success.
After applying the following actions you will be able to update your system by downloading the files you need from Microsoft.
1. Open a Command Prompt window with administrator rights and run the following command:
dism /online /remove-package /packagename:Package_for_KB2919355~31bf3856ad364e35~amd64~~6.3.1.14
2. Immediately run the command:
dism / online / cleanup-image / startcomponentcleanup
Try to install Windows 8.1 Update manually. You can download the files you need from here.
Window 8.1 Update