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Yup, I agree. Windows has nothing to do with the encryption of zip files. Someone encrypted the files and then packaged them up in the zip file you downloaded. I have seen this before. Sometimes there is a small.txt file among the encrypted files that gives the password to decrypt them. Sometimes the password is sent separately in an email to an address you provide. If neither has been provided then you will have to go back to where you downloaded the zip file from and look for the info needed to decrypt them.

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Here are more details of what I did 1. Downloaded a.zip file from a HTTPS server to my computer. 2. unziped the.zip file on my computer using 'extract all.' The files were NOT unzipped to an encryped hard drive. Used file manager to view the unzipped files. I was surprised that the unzipped file names appeared in green text - the green text means the files are encryped.

I was able to open and edit the unzipped files using notepad. I saved the files with notepad - the saved files were still showing up in green text 6. I then moved these files from my computer to a web server (some of these files were HTML files) 7.

The files could not be accessed using HTTP from the web server because the files were encrypted and could only be viewed when the files were located on my computer. I could unencrypt the files on my computer by right clicking on the fules and selecting unencrypt from the properties dialog box I did not create the original.zip file. So, I do not know if the original.zip file had some sort of encryption.

I am guessing the the.zip file was not encrypted but there is no way to know for sure. I downloaded the same.zip file to a Vista computer and unzipped it - the unzipped files were not encrypted on the Vista computer. I think it would be better if Windows 7 asked me if I wanted the unzipped files encrypted on my computer. Edit: I performed more tests. If the folder I put a ZIP (not encryped) file to is encryped, the ZIP file will change to green - but the folder or file inside (open the zip file with Windows Explorer) will not changed to green until you unzip them to the same folder.

I tried to send a zip file which included an encryped file to another computer. After unzip it, it is not a green file. Thus it seems that the 'encryption' is still caused by your local settings especially you can uncrypt the green files. Have the same problems with encryption of zipped Mac OS X files.

More datails: 1. I have extracted from zip files which was unzipped on Windows XP. I had normal access to these files on Windows XP. My HDD failed recently and I moved to Windows 7 (I had back up of all my data files). While copying data from backup drive to new one (using Windows 7) I got errors for all files that previously was zipped on Mac. All these files are green and have encrypted attribute set which I can't switch off. I can't delete or access those files.

ZIP file sample: http://www.i-marco.nl/weblog/jquery-accordion-menu-redux/demo.zip. Hi Geekette, This is a good reply, but the zip file I downloaded does not have Encrypt contents checked. Still, Windows 7 unzips it into an encrypted file. This is a very annoying 'feature' as I use zipped files from YouSendIt a lot to receive client files. This is a https location.

If a customer sends files from a Mac they are automatically locked after unzipping and I can only use them on the machine that they were unzipped on, so I am not flexible where I can work on them. I can unzip them on my old XP laptop at home and they will not be encrypted, so I can back them up, and use them on my work computer. Why does Windows 7 have this wonderful feature, and how can I get around it?

The encryption on upzip seems to be automatic, no matter what I do to the properties of the zip file before unzipping it. Thanks for you help everyone! Hi Geekette, This is a good reply, but the zip file I downloaded does not have Encrypt contents checked. Still, Windows 7 unzips it into an encrypted file. This is a very annoying 'feature' as I use zipped files from YouSendIt a lot to receive client files.

Fix Broken Zip File

This is a https location. If a customer sends files from a Mac they are automatically locked after unzipping and I can only use them on the machine that they were unzipped on, so I am not flexible where I can work on them. I can unzip them on my old XP laptop at home and they will not be encrypted, so I can back them up, and use them on my work computer. Why does Windows 7 have this wonderful feature, and how can I get around it?

The encryption on upzip seems to be automatic, no matter what I do to the properties of the zip file before unzipping it. Thanks for you help everyone! Unfortunately, you have to unzip and unencrypt (right clickpropertiesadvanceduntick 'encrypt contents to secure data') on the machine you used to download the file. You could then rezip to be able to move the zipped contents (a zip file) to another machine.