Forum Discussion

lsteffens's avatar
lsteffens
Advocate I
5 years ago

503 errors with custom visuals with report server using form authentication

Hi. In the last 2 months I have problems with using custom visuals (of the marketplace) in PBI reports on my report server using custom authentation (I use Forms authentication). The 503 error is q...
503
custom authentication
Custom visual
Report Server
lsteffens's avatar
lsteffens
Advocate I
5 years ago

Thanks for your answer.

 

I (re)checked the logs but they show to indication of errors.

But the RSPowerBI*.log file is not a joy to read as there are many long DAX expressions in it that are not comming from by DAX code in the reports.

As "Sandbox" is in the text before the long DAX expressions, maybe they are part of what custom visuals do internally with DAX - I don't know ...

 

The custom visuals are the most current versions downloaded of the marketplace from the most recent PBI Desktop for my report server. So there should be not problem with them (?).

I use the custom visuals "Text Filter", "Tag Cloud" and "Text Enhancer" - and very seldomly "Html Content", btw...

 

Where do check the API version of a downloaded custom visual? I can only see the version number of the visual itself in the infobox of it.

 

Do you have any further suggestions or hints?

Thanks.

emourits's avatar
emourits
New Member
4 years ago

Did you ever resolve this issue? We are experiencing exactly the same problem, also with custom forms authentication.

  • lsteffens's avatar
    lsteffens
    Advocate I
    3 years ago

    Even after many updates to Power BI Reportserver to the most current version (Mai 2023), this problem persists.

     

    I try to avoid all custom visuals and the one and only custom visual I use in my reports for now is "Text Filter" (why is there no build in visual in PBI ^^).

    It sometimes disappears, but after switching a tab in the PBI report and switching back it appears again (sometimes not ...).

     

    I'm currently trying to integrate some D3.js with the corresponding custom visual to give my reports an extra touch, and the problem is back again.

     

    Currently Firefox seams to have no problems with custom visuals .... but Edge and Chrome have.

     

    Maybe it has something to do with how complex the report page is - more non custom visuals on the same reportpage makes the problem worse.

     

    So if someone has a clue what's going on ... just drop your 2 cents here 😉

    • d_gosbell's avatar
      d_gosbell
      Super User
      3 years ago

      I have not seen this with the default windows authentication, so it could be an issue with your custom authentication provider. Have you tried debugging that? Have you implemented exception logging in your code?

      • lsteffens's avatar
        lsteffens
        Advocate I
        3 years ago

        Thanks for your reply.

         

        I'm using the code from github for SQL Server 2017 (this is the most current version of the sample) (https://github.com/Microsoft/Reporting-Services/tree/master/CustomSecuritySample), with minor changes in order to correctly verify the user and password against encrypted password stored on SQL Server coming from IIS forms/custom authentication template.

         

        I'll try to implement some kind of logging inside the custom security code for RS or, maybe better, hook the VS debugger on to the DLLs/processes (if that is even possible - I have not done that before).

         

        But I think it's some kind of configuration problem with PBIRS website - maybe a timeout.

        The problem with disappearing custom visuals seems to get worse if the report page is more complex and PBI and the browser has more work to do. (Firefox seems to work for now)

         

        Anyway, if I have some "news" I'll post it here ....

         

        Thanks again!