Thanks for the Grant Admin Full Control Tool. I tested on "C:\Program Files\JDownloader v2.0", which have 231 MB and 6.521 Files, 220 Folders. Using an context menu entry made by me, which use setacl.exe 64-bit recursively and that change the owner and set permissions to the current user logged in, the total time used was 44 sec. Using Grant Admin Full Control Tool, which works recursively also and change the owner and set permissions to the current user logged in, the total time used was less than 4 seconds, with the same results.