Error: "The license and or product numbers you entered are invalid"

Ensure the License and/or Product numbers were entered correctly.

To Resolve this issue:
1. Download the Microsoft .Net Framework removal tool and run on your computer.
2.  Download the latest Microsoft .Net Framework from Microsoft site.

Open the Microsoft download web page for your version of Windows

• Windows XP 32-bit
• Windows XP 64-bit
• Windows Vista 32-bit
• Windows Vista 64-bit   

Install your Microsoft .Framework on the computer

Install from the QuickBooks.msi file from the installation CD

1. Insert the CD that was used to install QuickBooks. If the installation wizard starts, close it.
2. Double-click the My Computer (Windows XP or 2000) or Computer (Windows Vista) icon on your Windows desktop and double-click the CD drive.
3. Double-click the QBooks folder on the CD.
4. Double-click the QuickBooks.msi or QuickBooks file (whichever you see, depending on whether Windows Explorer is configured to show or hide file extensions).
5. Run the installation step by step.