Detailed system requirements for different QuickBooks 2008 versions. Includes compatibility requirements (for example, for antivirus and firewall software).

Revert back to IE 6.0 of QuickBooks 2005 and earlier versions.

You can download QuickBooks and other Intuit products such as Point of Sale, Invoice Manager, and Simple Start from the Internet.

Depending on the size of the file, upgrading from a prior version may take some time. The progress bar may be slow, and QuickBooks will not respond to Windows which results in Not Responding status in Windows Task Manager. This article explains why and how to resolve the issue.

Instructions for stepping through the QuickBooks installation wizard when installing from CD.

You can register copies of QuickBooks that have never been registered, or you can reregister previously registered copies (including copies that are now discontinued) online or by phone. If using multiple copies of QuickBooks, you must register each copy that has been installed on every computer.

Overview for installing a new version of QuickBooks, which updates the company file.

Steps to help you find installation numbers (product number, license number, and key code) that are required to install QuickBooks or Point of Sale for Windows. Also tells you what to do if you can't locate the installation numbers or the numbers are illegible.