If 7-Zip cannot open an archive or compressed file and you see Cannot open file as archive error message, here's what you can do.

Occasionally, you'll need to open several compressed files from one ZIP folder. While Windows does a fine job extracting, there are better tools to unzip.

At the top, you will find three main options—Add, Convert, and Extract. Selecting the Add option allows you to archive files, ...

While Windows does have some built-in support for file compression, it's pretty limited, and definitely not enough even for a slightly more advanced user. You don't have to be doing rocket surgery or ...