Use this article to troubleshoot and resolve error 16026. Problems that occur when downloading a QuickBooks update can be caused by connectivity loss, or by Internet Explorer or Vista compatibility issues.
Links to resolve different error 1603 messages, which may mention Flash Player, installing QuickBooks, update Microsoft .NET Framework, the Windows Installer, or a problem installing Macromedia Flash Player.
Troubleshooting internet connection issues, firewall settings, and having mulitple instances of QuickBooks installed on the computer.
QuickBooks 2007 or later and QuickBooks Enterprise Solutions 7.0 or later are supported on Microsoft Windows Vista.
Steps to troubleshoot Visual C++ and related errors. Sign up to be alerted when a definitive resolution becomes available.
Provides QuickBooks installation FAQs, including updating and moving data, and information about system requirements.
In Windows Add and Remove Programs, remove Microsoft .NET Framework 1.1 Hotfix (KB886904) and then install Point of Sale.
Error 1603 can occur during QuickBooks installation because of problems installing Microsoft .NET Framework.