: A free, open-source utility that can often "force" open unknown archive types if they use standard compression headers.
: Ensure the "578" file was obtained from a trusted source, as obscure extensions are sometimes used to bypass email filters for malicious attachments. 578 vtglzip
: If standard tools don't recognize it, try renaming the file from .vtglzip to just .zip . Windows or macOS may then be able to open it with the built-in File Explorer or Archive Utility. : A free, open-source utility that can often
Could you clarify or what kind of system you are using? Knowing if this is a game file, a database backup, or a specific software download would help in providing more precise instructions. : A free