FIX: "The service is not available" error when you use SSRS 2016 Portal after you disconnect from the domain

Symptoms
Consider the following scenario:
  • You have User Account Control (UAC) enabled on a domain-joined computer.
  • You install SQL Server 2016 Reporting Services on this computer.
  • You disconnect the computer from the domain.
  • You use a web browser to access the SSRS web portal.
In this scenario, the portal does not open. Instead, you receive a "The service is not available" error message. Additionally, error messages that resemble the following are logged in the log file for the SSRS web portal:

Microsoft.ReportingServices.Portal.WebHost!reportserverwebapp!a4!<Time stamp>:: i INFO: [kmu6t20u]: ::1: GET /api/v1.0/me - Response 200 - 0:00:00.6646669
Microsoft.ReportingServices.Portal.WebHost!library!a4!<Time stamp>:: e ERROR: Throwing Microsoft.ReportingServices.Diagnostics.Utilities.ServerConfigurationErrorException: AuthzInitializeContextFromSid: Win32 error: 1355, Microsoft.ReportingServices.Diagnostics.Utilities.ServerConfigurationErrorException: The report server has encountered a configuration error. ;
Microsoft.ReportingServices.Portal.WebHost!reportserverwebapp!a4!<Time stamp>:: e ERROR: [m4amitl6]: OData exception occurred: Microsoft.ReportingServices.Diagnostics.Utilities.ServerConfigurationErrorException: The report server has encountered a configuration error. .
Microsoft.ReportingServices.Portal.WebHost!reportserverwebapp!a4!<Time stamp>:: i INFO: [m4amitl6]: ::1: GET /api/v1.0/ServiceState - Response 500 - 0:00:00.1205496

Note
 This issue does not occur if you have elevated permissions on the web browser.
Resolution
The issue was first fixed in the following cumulative update of SQL Server: Recommendation: Install the latest cumulative update for SQL Server
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. We recommend that you download and install the latest cumulative updates for SQL Server:
More information
SQL Server 2016 Reporting Services has introduced a new log file for the new portal. Those logs start with "Microsoft.ReportingServices.Portal." For example, Microsoft.ReportingServices.Portal.WebHost_06_19_2016_15_59_43.log.

The old logs still exist for any operation that interacts with the Report Server, including calls to the SOAP endpoint, report execution, and background operations.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.
Properties

Article ID: 3171505 - Last Review: 09/22/2016 03:16:00 - Revision: 2.0

Microsoft SQL Server 2016 Enterprise, Microsoft SQL Server 2016 Enterprise Core

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