Moving to the .zipx extension was definitely the right (and only) move. This is due to the fact that Microsoft's compressed folder code hasn't been updated in y

Moving to the .zipx extension was definitely the right (and only) move. This is due to the fact that Microsoft's compressed folder code hasn't been updated in years and thus it isn't safe to send out any Zip files that uses any new features [1]. [1]: https://devblogs.microsoft.com/oldnewthing/20180515-00/?p=98755 https://devblogs.microsoft.com/oldnewthing/20180515-00/?p=98...