When installing QuickBooks or a product update, the following error occurs:
Error 1603: The update installer has encountered an internal error
MSI returned 1603: Fatal error during installation.
This error can be caused by a damaged Microsoft Windows Installer file or a damaged QuickBooks installation.
Intuit recommends two solutions for this problem. The first solution may solve your problem, or you may need to try both to resolve the issue. For best results, perform the solutions in the order presented here.
Important: These troubleshooting steps may help resolve your issue. They focus on the Windows operating system, which is not an Intuit product. Intuit recommends if you are not comfortable doing these steps on your own, you can find expert assistance by consulting your computer's manufacturer or a Windows expert. If the difficulty persists after performing these steps, contact your computer's manufacturer or Microsoft.
If these solutions did not resolve the issue, you can read discussions and post messages and questions relating to your issue on the Intuit QuickBooks Community site for free or you can contact a technical support agent for additional guidance. Fees may apply.
Learn from other small businesses or post your own solution in the Intuit community.