I’m having a terrible time with a new Cisco E4200 router and WMP600N dual band wireless network adapter. Cisco directed me to download a zip file of driver files, but they created it on a Mac. Zip files created on a Mac can sometimes unzip on Windows as NTFS encrypted files. Cisco doesn’t believe me, but it’s true nonetheless.
Using the built-in Windows 7 unzip feature, Mac zip files will under still mysterious circumstances unzip on Windows as NTFS encrypted. In other words, they appear as green in Windows Explorer. This doesn’t happen if 7-Zip is used to extract the files. When the files were encrypted, I was not successful installing the driver. Since I have a portable version of 7-Zip on all of my machines, it’s more efficient to extract with 7-Zip than go to the trouble of unencrypting all of the files. It’s not just this particular Cisco zip file that has the problem as others have reported here.
It would be nice if Cisco would not create zip files on a Mac if the files are really intended for Windows users. It creates an unnecessary problem that wastes the customer’s time and is difficult to troubleshoot. As a best practice, I’m not going to create any zip files on a Mac and distribute them to Windows users unless and until I can find a way to prevent this encryption problem.
I’d like to see a few other people try to reproduce this problem. The zip file can be downloaded from here:
I’ve reproduced this problem on three different Windows 7 machines, both x32 and x64. The problem occurs with or without unblocking the downloaded file. If you can reproduce the problem, please report your results by adding a comment.