Download and install the software from 7-zip.org . Once installed, right-click 8liam.7z , select "7-Zip," and choose "Open archive" to view the contents without extracting, or "Extract Here" to unpack it.
within the .7z file directly (if it's a large archive) 8liam.7z
If you try to open the file and it requests a password, you will need to obtain that password from the source that sent you the file, as it uses strong AES-256 encryption. If you'd like, I can help you: Extract specific files (if you only need some, not all) Password-protect or encrypt the file Download and install the software from 7-zip