The problem was the OS Different language, but I solved it thanks to Brink.
I know it doesn't work because the owner didn't change, I can even see it in the cmd windows via a screenshot as I posted it before :)
Thanks for trying helping me :)
I think you are right, I didn't thought of it, before adding the ref file I had to change the "Y" to "O" since in french Oui means Yes.
I'm going to try change Administrators to Administrateurs and tell you.
Meanwhile there's the screenshot.
EDIT:
Yes indeed, it was just a language issue ...
I think i've figured out the problem :
when it takes ownership it does it for HP-envy/LAHCENE.
and when it tries to set permissions it does it for HP-envy/AMINE.
I'm gonna try a local account and report :)
Edit :
Now with a normal account, when I use the command prompt method it gives me no...
No i'm on my personal PC, no domain nor proxy.
But i'm using a Microsoft Account instead of a normal account, can this be the problem ?
Also, i'm gonna post some screens but it's in French, would you mind ?
Taking ownership works fine in both ways (via context or command prompt)
the issue happens when trying to get permissions (I tried via context and elevated command prompt)
Hi, i've tried it.
It shows TakeOwn on the context menu, but it seems not to work.
I got a message sayig that "No mapping between account names and security ID's were done"
Can you help me please :) ?