Here is how to password protect zip file on Windows 7 with 7zip software.
The built in Windows compression tool cannot password protect a compressed file; therefore a third-party application has to be used. In this article we use 7-Zip utility which is licensed under the GNU LGPL/GNU LGPL + unRAR and hence is free to download and use.
STEPS
Download the 7-Zip installer from www.7-zip.org and install it on your computer.
Create a folder on your computer and move the files you want to encrypt into the folder.
Right click on the folder and select “7-Zip” and then select “Add to archive”.
In the “Add to archive” panel, choose “zip” as the archive format.
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Go to the encryption box on the right hand side of the panel, and enter your password in the “Enter password” box and input it again in the “Re-enter password” box.
After you have done this much, click “OK” to finish the procedure.
That’s all.
