I have done application using EXtjs 4. Application contains many view screens like Login page, Dashboard. home etc, for to access project local URL is file:///E:/MyWeb/Web/index.html . once i visited this URL i will get first Login page because in viewport i have given xtype of Login view. whenever i will go different page URL wont be change it will be remains same as file:///E:/MyWeb/Web/index.html, but i can visit all the pages. some scenario if i am in middle, some problem happens in page when i reload the page it will go again Login page itself i cant be come in current page. again it will ask login and next i need to go required page. Can we change URL of the project in each page navigation? . How to achieve this one in ExtJs?. Great appreciated. Thank you. My viewport code is below.