As I understand it the sfc /scannow message "Cannot repair member file" "hash mismatch" means that the file was corrupt but the %windir%\winsxs copy was also corrupt, so the file can't be repaired. How do I force it to copy the file from the installation media?, 7601.17514.101119-1850_x64fre_client_en-us_Retail_Ultimate-GRMCULXFRER_EN_DVD.iso in my case. If I do sfc /scannow /offbootdir=x:\ /offwindir=x:\windows from an installation media repair boot it fails because x is online not offline, and it doesn't have all files anyway, x:\Windows\Microsoft.NET\Framework\v2.0.50727 is empty for example. So how do I force it to copy the files from e:? Thanks!