bypass the source of a problem if they are unable to start properly. Security Excel, PowerPoint, and Word have been updated to provide password encryption options based on CryptoAPI. Additionally, all Office XP programs provide options for users to digitally sign documents. Installation and deployment When upgrading from a previous version of Office, Office XP retains the user's previous configuration. Office XP can also be installed directly from an administrative image hosted on a web server via HTTP, HTTPS, or FTP. The Office Resource Kit includes various improvements to deployment functionality when compared with the Office 2000 version. A new Setup INI Customization Wizard allows administrators to customize the Office XP INI configuration file prior to deployment. The Custom Installation Wizard can prohibit the installation, use, or uninstallation of programs or features such as the Run from Network and Installed on First Use setup options. Finally, the Custom Maintenance Wizard has been updated to provide customization options to configure Office XP including user preferences and security settings. The Save My Settings Wizard, introduced in Office 2000 as an optional download for Microsoft account users to remotely store their Office settings to the Office Update web site, has been updated to support importing and exporting backups to local storage or to a network share. In an effort to curtail software piracy, Microsoft incorporated product activation technology into all versions of Office XP to prohibit users from installing a single copy of the software in a manner that violates the end-user license agreement (EULA). The EULA allows a single user to install one copy each on a primary device and a portable device such as a laptop. Users who make substantial hardware changes to an Office XP device may need to reactivate the software through the Internet or by telephone. Product activation does not require personally identifiable information. Office XP introduced an optional subscription-based activation model that allowed consumers to annually license the product and receive incremental updates at a reduced price when compared with the cost of a full retail version. Microsoft originally intended to deliver the activation model to United States customers after the retail availability of Office XP on May 31, 2001, but later decided to make it available to consumers in "a few select locations" instead, citing a more cautious delivery approach. In spite of this, Microsoft distributed optical media and a single subscription to authorized U.S. retail