X-Author for Contracts 1.0 (Classic) X-Author for Contracts for Users Appendices Current: Uninstalling X-Author PDF Download PDF Download page Uninstalling X-Author. Current page All pages Uninstalling X-Author Once installed you can uninstall X-Author either by using the installer executable or Windows uninstall programs.PrerequisitesAll Microsoft Office applications should be closed.To uninstall X-AuthorDouble-click the ApttusInstaller.exe, it will recognize X-Author is already installed and give you the option to uninstall.Select Start and then select Control Panel.Select Uninstall Program to display the programs list.Right-click X-Author Contracts and click Uninstall.X-Author is removed from your machine. ×