You can't just double-click a .rar and hope for the best. To "unlock" the vault, you'll need the right tools:
A .rar file is essentially a digital container. In the world of sandbox gaming (like Garry’s Mod), a "GMY" or "Gmod" archive usually holds: Download GMY rar
: Backups of builds that aren't available on official launchers anymore. How to Unpack Your Gear You can't just double-click a
: Right-click the archive and select "Extract Here" to reveal the .exe or asset folders. Download GMY rar