mvc cutom role provider suddenly stopped working

Question

any mvc expert get thorgh my issue 

 

i am working in our company using tfs 

in my application working fine with roles so many days but suddenly i didn't change any thing 

the roles stopped working its not hitting the custom role provider class from my system 

but another system its works fine comming to my system its not working in chrome and ie its working in firefox

whats the issue am not getting it will redirect to home page directly 

why its happening in my computer only other computer same project working fine 

 

i have searched its saying widows authentication is applying for u r website i changed the port also but no use 

what exactly happing i din't get the solution what is the problem