After Migrating the application to work with the Integrated .NET mode, you might come across a problem: Server Error in Application "WebSiteName" - HTTP Error 401.3 – Unauthorized
![HTTP Error 401.3 – Unauthorized HTTP Error 401.3 – Unauthorized](http://www.bloggingdeveloper.com/pics/posts/iis7/401.3_Unauthorized.jpg)
HTTP Error 401.3 – Unauthorized
![Resolving HTTP Error 401.3 – Unauthorized Error Resolving HTTP Error 401.3 – Unauthorized Error](http://www.bloggingdeveloper.com/pics/posts/iis7/IIS_Authentication.jpg)
Resolving HTTP Error 401.3 – Unauthorized Error
Click on Authentication and click edit after choosing Anonymous Authentication. In the opening window select Application Pool identity and click OK.
![Resolving HTTP Error 401.3 – Unauthorized Error - Application Pool Identity Resolving HTTP Error 401.3 – Unauthorized Error - Application Pool Identity](http://www.bloggingdeveloper.com/pics/posts/iis7/Application_Pool_Identity.jpg)
Resolving HTTP Error 401.3 – Unauthorized Error - Application Pool Identity
作者:Angelo Lee
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