J'ai trouvé ceci concernant l'erreur indiquée, à voir si cela fonctionne :
Run CMD as administator (Go to start screen, all apps, search CMD, right-click and select run as administrator)
Enter either of the following depending if you're on 32-bit or 64-bit Windows
32-bit: dism /online /remove-package /packagename:Package_for_KB2919355~31bf3856ad364e35~x86~~6.3.1.14
64-bit: dism /online /remove-package /packagename:Package_for_KB2919355~31bf3856ad364e35~amd64~~6.3.1.14
When step 2 has completed, enter: dism /online /cleanup-image /startcomponentcleanup
Retry the update!