Open QuickBooks Pro 2013 and press the F2 key . Alternative Shortcut: Press Ctrl + 1 on your keyboard.
If you still have the software installed on a working computer, the quickest way to find your information is through the "Product Information" screen. quickbooks pro 2013 license and product number
This guide details every available method to retrieve these critical credentials. 1. Within the Software (Fastest Method) Open QuickBooks Pro 2013 and press the F2 key