When you start Parallels Desktop 10 for Mac, it will prompt you to register your activation key. A license key for a Business Edition cannot be registered during the standard registration process, so you need to click on the Business Edition button at the bottom of the registration window to skip this step and proceed to activation.
Please enter your activation key (dashes will be added automatically):
Once you enter the key, it will be validated. If the key is valid, it will be marked with a check mark.
Note: Internet connection is required for activation of a Business Edition copy.
If the key is not valid, it will be marked with a red cross sign.
Check if you entered the key correctly.
If the key has been successfully validated, click Activate. If your Mac is connected to the Internet, Parallels Desktop 10 Business Edition will be successfully activated.
If you have issues with activation, please refer to the articles:
#121071 Unable to activate Parallels Desktop Business with a valid license key
#120774 Parallels Desktop Business copy does not accept a new license key