The Backup Archive has a “Open Containing Folder” option that gives you direct access to display all files in the backup.
This way you can quickly open Windows Explorer at the path where all the files of the virtual machine backup are stored.
Select the backup you want to inspect. Then right-click the backup for the context menu and select the “Open Containing Folder” option.
The Windows Explorer window will open after selecting the option. For an example, see the screenshot below. (The the attentive reader might be wondering, yes I did change the selected row between making screenshots)