Forum Discussion
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 quite random and might not happen everytime, but can be reproduced by hitting F5 in the browser.
Sometimes all custom visual are ommited, sometimes only a part of the custom visuals are drawn - sometimes a scrollbar is shown on the custom visual, but there should be no scrollbar (e.g. the tag cloud visual).
It's a very random error/problem.
Here is a small example from the Edge console window:
GET https://my.server.com/powerbi/libs/scripts/customVisualsHost.bundle.js net::ERR_ABORTED 503
cvSandboxMinimal.htm:16 GET https://my.server.com/powerbi/libs/scripts/visualSandbox.minimal.externals.js net::ERR_ABORTED 503
cvSandboxMinimal.htm?=&plugin=tagCloud8448D0BE3AE3424D97B3973515418218&locale=de-DE:17 GET https://my.server.com/powerbi/libs/scripts/customVisualsHost.bundle.js net::ERR_ABORTED 503
cvSandboxMinimal.htm?=&plugin=tagCloud8448D0BE3AE3424D97B3973515418218&locale=de-DE:7 GET https://my.server.com/powerbi/libs/styles/visualsandbox.css net::ERR_ABORTED 503
cvSandboxMinimal.htm?=&plugin=tagCloud8448D0BE3AE3424D97B3973515418218&locale=de-DE:16 GET https://my.server.com/powerbi/libs/scripts/visualSandbox.minimal.externals.js net::ERR_ABORTED 503
cvSandboxMinimal.htm?=&plugin=htmlContent443BE3AD55E043BF878BED274D3A6855&locale=de-DE:7 GET https://my.server.com/powerbi/libs/styles/visualsandbox.css net::ERR_ABORTED 503
The problem happens on all major browser in their current version.
The Report Server runs the January 2021 release, but the problem showed up with the release before (October 2020 - most current version), too.
Has anybody seen this odd behavior - and is there a solution/workaround for this 503 problem?
Thanks,
Lars
9 Replies
lsteffens
503 error is indicating that a server is temporarily unable to handle the request. This may be due to the server being overloaded or down for maintenance. I will suggest you to check the log files first: C: \ Program Files \ Microsoft Power BI Report Server \ PBIRS \ LogFilesSince you are using custom visuals this could cause fluctuation in connection, and there is one limitation you should be aware of. If the custom visuals using an API version that is greater than the one that was released with PBIRS then it won't work properly.
Paul Zheng _ Community Support Team
If this post helps, please Accept it as the solution to help the other members find it more quickly.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.
Did you ever resolve this issue? We are experiencing exactly the same problem, also with custom forms authentication.
