If you need the for archival or compatibility reasons, the only legitimate path is through a retained university license or a transferred perpetual license. Pursue "free" cracks from forum links at your own peril: they are often malware-laden, legally actionable, and technically unstable on modern operating systems.
Anyone who purchased Mplus within the last year or has an active Upgrade and Support Contract Why update? Mplus 6.12 Base Program and Combination Add-on setup free
Extends these to handle complex data structures, such as: If you need the for archival or compatibility
– Some academic libraries maintain old software archives for historical research, but you still need a valid license key. Mplus 6.12 Base Program and Combination Add-on setup free