After upgrading from Win8.1 to Win10, for some reasons returned to Win8.1 system, and then upgrade Win10 encountered 80070057 error code, resulting in failure to install Win10 So how can we get Win8.1 to upgrade Win10 smoothly? The following small series will introduce the treatment of this problem.
concrete steps are as follows:
1, Right Start menu, command prompt (administrator).
2. Enter Proxycfg -d and press Enter.
3. Enter Services.msc.
4. Find the Background Intelligent Transfer Service.
5, right click, select Enable, restart after reboot.
The Win8.1 upgrade Win10 failure error code 80240020 problem is probably because the Background Intelligent Transfer Service service is not enabled, use the above steps to start the service can be solved.
--Fa Yi 1. Right click on the desktop and select Configure to exchange the display card; 2. Open t
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