Owin comes with 15 other dependencies when we add default "blank" mvc5 template in solution. Which some time is irrelevant to web application hence needs to be removed for adding custom authentication techniques in the web application. Remove the owin  from solution is tedious task but if we follow the below procedure then it can be easily removed from the solution. Right click on your project and from menu click on Manage Nuget Packages. on left side of Manage Nuget Packages window click on Installed Package then on right side of window in search box type owin.  Uninstall packages in order of: microsoft.aspnet.identity.owin microsoft.owin.host.systemweb microsoft.owin.security.cookies microsoft.owin.security.facebook microsoft.owin.security.google microsoft.owin.security.microsoftaccount microsoft.owin.security.twitter microsoft.aspnet.identity.entityframework microsoft.aspnet.identity.core Open web.config file and remove these sections from   &l