Important: If possible, create a Quicken data file backup for safer side. Some third-party app blocking Quicken to run.Reason to Uninstall and Reinstall Quicken In this post, we’ll discuss about the reason and process to uninstall and reinstall Quicken. You can perform the uninstallation and reinstallation process with both operating system Windows and Mac without losing your financial data. Quicken program helps you to track financial data, paying bills, create a budget, and much more but sometimes it also faces technical problems and there would be a need to Uninstall and Reinstall Quicken from the computer.