Build 3.5.0.83 of xlsgen continues the work begun with build 3.5.0.82 in which we added support for automatically decrypting XLSX files (and their variants) without a password. This was useful for cases where Excel would encrypt a file depending on what you are doing with it.

xlsgen adds support for XLS files (and their variants) in such scenario.

So when you are to open such file, you do not have to pass a password.