Browser asks for username & password while debugging

Problem : The browser keeps asking for username and password while debugging.

Solution :
1. Check on IIS if you're using IIS, by pressing window + R, then type "inetmgr" without quotes. Go to the website on the default web site. Then right click, properties, on directory security, check Anonymous Access, and make sure you also check Integrated Windows Authentication.

2. Make sure the application being developed is not located on shared folders such as My Documents, Desktop, etc. If it is indeed on one of those folders, move it to another folder on the local drive, e.g. C:\, D:\, etc.