Win10 upgrade failed how to do win10 preview upgrade 9879 failure solution

        If you want to experience the latest win10 system, we can upgrade it manually, but how can some players solve the problem of not being able to upgrade? What should I do if the win10 upgrade fails? Let's take a look at the win10 preview upgrade 9879 failure solution.
win10 upgrade failure how to do win10 preview upgrade 9879 failure solution
First suggest users, restore the registry key values ​​that have been changed, then restart the computer, and then try to upgrade again when the network is more stable, This method is invalid, you can refer to the following method.
one: Rename the SoftwareDistribution folder

& middot; disable the Windows Update service in the service
& middot; open the C: \\ Windows folder, and then right-click the SoftwareDistribution folder to rename it.
· Re-enable the Windows Update service after the rename is complete.
Method Two: Repair Windows Components

while pressing the Win key + X, select Command Prompt (Administrator) and enter the following commands (you can also right copy and paste):
Dism /Online /Cleanup-Image /CheckHealth
Dism /Online /Cleanup-Image /RestoreHealth
method three: use ISO image directly upgrade to Win10 preview Build 9879