: Search your inbox for a confirmation email from MAGIX or the retailer (e.g., Humble Bundle) where you purchased the software. Physical Packaging
If you have lost your key, you can typically retrieve it using these methods: MAGIX Account : Log in to the MAGIX Service Center and select "My Products" Acid Pro 8 Serial Number
: If the software is already installed and activated on your PC, you may be able to find the key in the Windows Registry under HKEY_LOCAL_MACHINE\SOFTWARE\MAGIX\[Product Name] or by using a license key finder tool Activation Process Technical support - MAGIX : Search your inbox for a confirmation email
to see a list of all your registered software and their corresponding serial numbers. Confirmation Email Registry Editor (Windows)
: If you bought a boxed version, the serial number is usually located on a sticker inside the box or on the printed manual. Registry Editor (Windows)