Download and install Parallels Desktop 12:
Start Parallels Desktop 12. You will see the registration window. You should either sign in to your existing account or create a new one.
After you log in or create an account, you will see the activation window. Click on Try Free for 14 days.
Select the edition you would like to try.
Your copy of Parallels Desktop 12 will be activated for 14 days. The period cannot be extended.
You can switch between editions every time you start Parallels Desktop. Quit Parallels Desktop and start again. When the Parallels Desktop Trial window appears, click on Change Edition and select the one you would like to try.
Do I get full-featured Parallels Desktop 12 if I activate it with a trial key?
Yes, Parallels Desktop 12 trial is full-featured without any functionality limitations.
You can purchase the full version at any time during your trial period and reactivate your copy with it. Go to the Parallels Desktop menu, click on Account & License to open the activation window where you can enter your new key.
Note: you will not have to reinstall Parallels Desktop or your Windows to start using a commercial version of the software.