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Paginated Report throws Sys.WebForms.PageRequestManagerServerErrorException (503 Error)
Hello, here an update:
It looks like the trellix endpoint security service was the reason. We created a policy to exclude the directory "C:\Program Files\Microsoft Power BI Report Server\PBIRS\ReportServer".
Now it works
Hi,MORATHO .I am glad to help you.
Based on the log information you provided:
The issue mentioned in the logs occurs after applying patches KB 5050182 and KB5050008, and rolling back these patches restores normalcy. This indicates that these patches may have introduced changes that are incompatible with your environment.
This suggests that the earlier version (1.20.8944.34536) was stable over a long period of time, whereas the newer version (January 2025) had problems after applying the patches, which may indicate that the newer version or patches introduced incompatible changes
You can try rolling back SSRS to an even older version (rather than the latest version) to see if that solves the problem.
URL:
Upgrade and migrate Reporting Services - SQL Server Reporting Services (SSRS) | Microsoft Learn
If the above still doesn't help you, you can create a support ticket for further help (maybe the problem is that the new version is not compatible)
It would be great if you continue to share in this issue to help others with similar problems after you know the root cause or solution.
URL:
Microsoft Fabric Support and Status | Microsoft Fabric
I hope my suggestions give you good ideas, if you have any more questions, please clarify in a follow-up reply.
Best Regards,
Carson Jian,
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.