From the Help menu, select Activate QuickBooks (or Register QuickBooks).
Follow the on-screen prompts to verify your information, and complete the activation process.
For QuickBooks 2015 and older versions
In line with Intuit's discontinuation plan for older products, discontinued products cannot be registered for the first time. You can re-register discontinued products if they have been registered before and are being reinstalled.
You can contact us to get the validation code, but note that assisted support for discontinued products is no longer available.
Troubleshoot activation of QuickBooks Desktop
If you have technical issues, such as a blank screen or error message, try temporarily disabling your antivirus software.
If the information you entered isn't accepted, make sure it's the same information you gave at the time of purchase.
If you are still unable to register on your own, contact us to register by phone.
For more information about installing QuickBooks Desktop, see the following: