Hello,

i have downloaded the windows 10 preview, it installs up to 100% but restores back to windows 8.1 when it gets to the booting stage.

Any ideas how to resolve this issue.

Hi Quintasdiaz,

Could you please share us with the setupact.txt file here? Find it under:

$windows.~bt\Sources\Rollback

While we need to enable hidden files/folders under Folder options:

More reference:

https://technet.microsoft.com/en-us/library/hh824819.aspx?f=255&MSPPError=-2147217396

Upload the log file into OneDrive and then post the shared link here.

Then we may offer a better suggestion on how to deal with this sutuation.

Or you may try to upgrade(Please collect the log file before doing this):

https://www.microsoft.com/en-us/windows/windows-10-upgrade

R