https://www.hellotech.com/guide/for/how-to-open-a-zip-file-windows-mac-iphone-android

Well, I did all that and get an error window saying in essence that "Windows cannot open the folder" "The Compressed (zipped) Folder _folder named here_ .zip is invalid."

Previously, I had some attached zip folders to a book I purchased and the same thing happened.

Try to download the ZIP archive in Windows Safe mode to see if that works in case security software is causing problems.

Boot the computer in Windows Safe mode with network support to see if that has effect.

• https://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/
• https://www.digitalcitizen.life/4-ways-boot-safe-mode-windows-10/

Can you post a screenshot showing the options you get when you right click on the zip file?

Thank you for your continued interest in helping me, however, I must be away until Monday to continue the pursuit. Thank you again.

We'll be here.  ;-))