It is sometimes necessary to perform a clean install or uninstall to remove residual QuickBooks installation files and folders left behind by Microsoft Add or Remove Programs. reinstall clean install clean uninstall, . This is most often required when the QuickBooks function is damaged or when reinstalling QuickBooks does not correct an issue. reinstall clean install clean uninstall, . This is referred to as a clean install.
Caution: A clean install of QuickBooks requires that you also reinstall any other Intuit software programs that share the same installation folder.
Intuit strongly suggests that before performing a clean install or uninstall, you back up your company data file to a safe location to prevent the file from being accidentally deleted or overwritten. reinstall clean install clean uninstall, . For more information, refer to the article Back up company files overview. reinstall clean install clean uninstall, . Be sure to have your QuickBooks installation CD-ROM and license key handy before reinstalling QuickBooks.