: If you see other files like 03_103p.7z.001 , you must have all parts in the same folder before you can successfully extract the data.
: Visit the official 7-Zip website to download the installer for your operating system. Open the Archive : Right-click the 03_103p.7z file. 03_103p.7z
Are you running into any or password prompts while trying to open this? : If you see other files like 03_103p