SSRS 2012 - The request failed with HTTP status 401: Unauthorized.

Hi GoGladiator,

Generally, "The request failed with HTTP status 401: Unauthorized" occurs when

• The service account used to connect to the Report Server is not authorized.
  


• The Reporting Services is configured to use Kerberos, however, we didn't register Service Principal Name (SPN) for the account the Reporting Services is running under.

So, to fix this issue, we can refer to the follow steps:

1. Make sure the user is able to connect to the Report Server.
   


2. If using Kerberos authentication, please make sure SPN is configured correctly. If using Kerberos authentication, please make sure SPN is configured correctly.

For more information about Kerberos Authentication and how to register SPN for a report server in Reporting Services, please see the articles below:

Configure Windows Authentication on the Report Server

Register a Service Principal Name (SPN) for a Report Server

Hope this helps.

Thanks,

Katherine Xiong

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Katherine Xiong

TechNet Community Support