Hi,
Ruchira
Developer licenses are free, and you can get as many as you need if you already have a Microsoft account. By default, developer licenses that you acquire
using a Microsoft account must be renewed every 30 days. If you do not renew your developer license after 30 days then you can't develop Windows Store apps.
For more information you can see this topic:http://msdn.microsoft.com/en-us/library/windows/apps/hh696646(v=vs.110).aspx
Good Luck!
