Apr 17, · Sometimes Windows 7 USB/DVD Download Tool error: We were unable to copy your files, how to fix it? This article will shows you 2 ways to fix such issue and recommend two alternative if Windows 7 USB/DVD Download Tool not working. Dec 30, · Windows 7 USB/DVD Download Tool Unable to Copy Files I was planning to install Windows 8 Developer Preview on my netbook so I downloaded Microsoft Windows 7 USB/DVD Download Tool. Windows 7 USB/DVD Download Tool by Microsoft allows you to create bootable USB flash drive for Windows 7 and Windows 8 Developer Preview. Mar 03, · Windows 7 USB/DVD Download Tool we are unable to copy file. i solved it for me. the problem was, that W7U/DDT can write/copying the files if you Anti-Virus-Software (i have avira antivir pro) protects drealfmgrenada.com (autostart) functions. deactivate the autostart- protection for the time you need to create the stick. good luckEstimated Reading Time: 2 mins.