Hi bhushanborole,

The K2 Workdesk application was designed for K2 Blackpearl, but it has since been deprecated and is not compatible with K2 Cloud.  However, K2 now has an out-of-the-box feature for storing, creating, and managing all of your 'SmartStarter' applications.  You can find the 'Apps' area in your K2 Workspace site.  Please see more information in the documentation below:

https://help.k2.com/onlinehelp/K2Cloud/UserGuide/Update_11/default.htm#Apps/Overview/Apps-Overview.htm