reporting services (ssrs) prompts with username/password

Question

I am using reporting services 2010 and get the following prompt when trying to access the reports:

Answer 1

My case was because I was using ReportViewer version 10 for accessing a Report Server 2014. Upgrading the ReportViewer to version 11 eliminates this problem.

Check your Web.config for \configuration\system.webServer\handlers\add[type].