If you need Parallels Desktop 15 (originally released in August 2019 to support macOS Catalina), the safest route is to use official channels: Parallels Desktop 15 for Mac: Updates Summary
Virtualization software requires frequent updates to stay compatible with new macOS patches. Cracked versions cannot be updated, meaning they will eventually stop working or cause system crashes.
. To use the software legally, you must either use a time-limited trial or purchase a license key. Legal Ways to Access Parallels Desktop Buy Parallels Desktop for Mac: Standard, Pro, and Business
Some users may search for "Parallels Desktop 15.1.2 activation key free" or attempt to use cracked or pirated versions. However, this approach comes with significant risks:
An open-source virtualization tool that is completely free, though it requires more manual configuration than Parallels.
Using "cracked" keys or unauthorized activation tools can compromise your Mac’s security with malware. How to Get Parallels Desktop Legally