Japanese.7z Official

Restart your computer, extract the file, then change it back. Method C: Use Bandizip or WinRAR (Alternative)

This is the most reliable method for handling Japanese character encoding directly. Open Command Prompt or Terminal. Japanese.7z

Modern 7-Zip fully supports Unicode, but if the archive was created with an old tool using SJIS, it needs special handling. Restart your computer, extract the file, then change it back

Use the -mcp switch with Code Page 932 (Japanese) to extract: 7z x "YourFile.7z" -mcp=932 Restart your computer

7zzs (standalone 7-Zip) can be used without installation. If you tell me: Are you using Windows or macOS/Linux ? Are you using the GUI or Command Line ? I can provide the exact command or steps for your setup. Encrypting and decrypting archives with 7-Zip - Red Hat