Unable to validate data - Error logging into the SSRS Portal

Hi guys, I’m getting an error running the SSRS Portal after configuring CustomAuthentication (as per example provided in the repository) from Reporting Services Custom Security Sample for Power BI Report Server and SQL Reporting Services 2017

The issue is regarding MachineKey as seen from the error logs. I’m following all the instructions given in the above sample but still no luck yet.

I’m running the SSRS 2017 on my Dev PC (Win 10 Pro).

The custom login works well (Register and Login) for the report server at: http://localhost/ReportServer_SSRS, but the portal (http://localhost/Reports) doesn’t work after Login. It returns the 500 Internal Error message. Stack trace is given below:

Exception: System.Web.HttpException (0x80004005): Unable to validate data.
   at System.Web.Configuration.MachineKeySection.EncryptOrDecryptData(Boolean fEncrypt, Byte[] buf, Byte[] modifier, Int32 start, Int32 length, Boolean useValidationSymAlgo, Boolean useLegacyMode, IVType ivType, Boolean signData)
   at System.Web.Security.FormsAuthentication.Decrypt(String encryptedTicket)
   at Microsoft.BIServer.Owin.Common.Middleware.CustomAuthenticationMiddleware.CreateRequestContextFromCookie(IOwinContext context)
   at Microsoft.BIServer.Owin.Common.Middleware.CustomAuthenticationMiddleware.CreatePortalIdentity(IOwinContext context)
   at Microsoft.BIServer.Owin.Common.Middleware.CustomAuthenticationMiddleware.Invoke(IOwinContext context)
   at Microsoft.Owin.Security.Infrastructure.AuthenticationMiddleware`1.<Invoke>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.BIServer.Owin.Common.Middleware.RequestLoggingMiddleWare.<Invoke>d__2.MoveNext() | RequestID = s_562e4f17-7d98-45e0-b744-02509f01e0d8 

RsReportServer.config file is attached here for reference rsreportserver.config.txt

Please suggest if there’s anything wrong in the configuration, or I’m missing out on something. Or probably a bug in the operating environment?

Thanks in advance!

[ravipunjwani]

Thanks @manceelee for suggestion.

It actually worked by adding the following into rsportal.exe.config

  <system.web>
    <machineKey validationKey="xxxxxx" decryptionKey="xxxxxx" validation="AES" decryption="AES" />
  </system.web>

I guess it should have imported the machine key from the reporting service instead of getting from own configuration file.

[TestO2015]

Hi @n1LWeb, have you added your machineKey to rsReportServer.config under <configuration>?

Also make sure it’s in the correct format otherwise it get’s wiped for me.

<MachineKey ValidationKey="BE4663BB11C14E8C7C1DB0A48022D517CB668C65A46174B0C4CFF4D9B7CE2498EA998C4E5A8C15EE5262D5C297479349B2A9783700AB3C1C891B914D12691A0D" DecryptionKey="7121FD4D52F0035DBBB113B9E449ED4467CA01DDD26684FF" Validation="SHA1" Decryption="AES"/>

After this restart the Report Server and it should sync the machineKey to rsportal.exe.config.