How to open encrypted zip file if zip password forgot? This video would tell you a way that by recovering forgotten zip password with iSunshare ZIP Password Genius, you can easily extract encrypted zip file to remove zip password. Then you could bypass zip password to open zip file from then on.

First, get iSunshare ZIP Password Genius Professional and install it on your computer.

Suppose you have not only one computer available in LAN, please select Professional version, because you can run iSunshare ZIP Peer on all other accessible PCs in the LAN to help recover zip password fast. Suppose you have not, you can still choose Standard version to recover zip lost password on one computer.

Second, create client program iSunshare ZIP Peer and run it on other computers in LAN to recover zip password.

Third, import encrypted zip file, set zip password recovery probable range and length, and click “Start” button to begin finding zip password with help of client program, iSunshare ZIP Peer.

If zip file password is not so complex and there are so many client programs running together, you will instantly find zip password to extract encrypted zip. Get new folder with the same name like encrypted zip file. Please add new folder to zip archive again and don’t set password to protect it.

Hope it also helps you bypass lost zip password to open zip archive.
http://www.isunshare.com/zip-password/bypass-zip-password-if-forgot-password-to-zip-file.html