Unplanned
Last Updated: 26 Oct 2026 11:42 by Todor

I have multiple scheduled tasks in my RS.NET.

I noticed that when a scheduled task is running, for example, rendering a huge report, and I change any scheduled task in the Report Server Manager application, the running task is cancelled.

After the successful update of the tasks, the cancelled one is not resumed or restarted. It is lost, and the subscriber never receives a report or notification about the expected task execution.

In Development
Last Updated: 09 Oct 2026 13:39 by ADMIN
Scheduled for 2026 Q4 (Nov)

We are using the .NET Framework version of the Report Server. We have multiple reports that rely on multi-value report parameters. When we preview them separately, they render correctly. However, when we create scheduled tasks that rely on those reports, the parameter values we choose during the creation are not preserved, and the reports render incorrectly. Please consider resolving this issue.

Completed
Last Updated: 09 Oct 2026 08:24 by ADMIN
Release 2026 Q3 (Oct)
We currently have more than 670 scheduled tasks, and the /Scheduling page experiences significant performance issues when loading. In the .NET Framework version of Report Server, the page loaded in ~26 seconds (slower than expected, but overall usable). However, after installing the .NET version, the load time has increased to ~90 seconds, making it very difficult to use. Please consider addressing the performance issue.
Completed
Last Updated: 08 Oct 2026 16:29 by ADMIN
Release 2026 Q3 (Oct)
When connected to Report Server, double-clicking a child member of an expandable field (e.g. Year under a DateTime column) in the Expression Editor inserts an incorrect expression: Fields.Year instead of Fields.ActualField.Year.
Unplanned
Last Updated: 08 Oct 2026 10:10 by Vaishnava

I have an application that uses Microsoft Entra ID authentication. After signing in, users can click a link that redirects them to Report Server for .NET, which is also configured to use Microsoft Entra ID authentication. However, users are not automatically signed in to Report Server after the redirect; instead, they are presented with the login page and must manually click the Microsoft Entra ID sign-in button to complete a separate authentication flow.

Please consider addressing this.

Completed
Last Updated: 18 Aug 2026 08:22 by ADMIN
Release 2026 Q3
When a user that has only read permissions logs in and stars a report, the starring disappears after a refresh of the page or when the user logs out.
Completed
Last Updated: 08 Jul 2026 13:44 by ADMIN
Release 2026 Q2 (20.1.26.707)

I am using the Standalone Report Designer to connect to the Report Server for .NET. However, in the .NET version, I see an error "The JSON value could not be converted to System.Data.DataTable.") when opening the query designer or when attempting to use the preview functionality at the last step of the SqlDataSource wizard.

 

In the .NET Framework version of the Standalone Report Designer the wizard itself works as expected, but the Data Explorer does not show the available fields and I have to enter them manually.

Completed
Last Updated: 08 Jul 2026 13:44 by ADMIN
Release 2026 Q2 (20.1.26.707)
After migrating from the old Report Server to the new Report Server for .NET, the previously existing ADFS users show up as "Federation" users in the new server, which is incorrect, since the new server uses Entra ID authentication instead of ADFS.
Completed
Last Updated: 01 Jun 2026 12:03 by ADMIN
Release 2026 Q2 (May)
The Migration tool updates the source storage instance to its own version prior to migration process. This might cause issues in scenarios where an older version of Report Server storage is used in production and the migration is performed using a newer version of Migration tool. The tool must show a confirmation dialog and wait for input from user before modifying the source storage.
Completed
Last Updated: 21 May 2026 14:28 by ADMIN
Release 2026 Q2 (May)

We've recently deployed a new infrastructure with multiple instances running Telerik Report Servers behind a load balancer.

In this new structure, we noticed a new intermittent bug when rendering some reports using the HTML5 report viewer, which is breaking some of our images included in PictureBox controls due to 400 Bad Request errors.

Upon further inspection, it seems the error happens because one of the instances is returning the following error instead of loading the image, hence the intermittency.

Provided document Id has expired. Please refresh your browser to generate a new one.
When I try opening the URL of the image directly on my browser and keep refreshing, it sometimes loads, but other times shows the error above, which seems to indicate it's a problem with one of the instances.
Completed
Last Updated: 16 Apr 2026 12:26 by ADMIN
Release 20.0.26.402
I observe an issue with the SqlDataSource configuration. On the last step of the wizard, when I am about to run the query/stored procedure to preview the result, I get an error message. This does not seem to happen when the query/sp does not include parameters.
Completed
Last Updated: 04 Mar 2026 13:12 by ADMIN
Release 20.0.26.304

I am setting up a scheduled task with reports with WebServiceDataSource on the Telerik Report Server for .NET.  When I try run the scheduled tasks, I get the following error message when the data source contains JsonPath:

Could not load file or assembly 'JsonPath.Net, Version=2.0.0.0, Culture=neutral, PublicKeyToken=17ed63f672b0e278'. The system cannot find the file specified.

When there is no JsonPath in the WebServiceDataSource, the error is as follows:

Could not load file or assembly 'System.Text.Json, Version=10.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified.

 



Completed
Last Updated: 11 Feb 2026 15:40 by ADMIN
Release 2026 Q1

For example, the 'Activity' and 'items per page' in the Scheduled Tasks are not available in the 'sr.js' file:

This doesn't let us translate the whole Report Server.

Completed
Last Updated: 28 Jan 2026 18:18 by ADMIN
Release 2026 Q1
In Report Server for .NET, I attempted to change the `reportSharingTimeout` setting in my report engine configuration at `C:\Program Files (x86)\Progress\Telerik Report Server .NET\Telerik.ReportServer.Web\config\TelerikReporting.json`. However, it did not have any effect.
Unplanned
Last Updated: 05 Jan 2026 11:49 by ADMIN

The Report Server is localizable. However, its viewer is not.

The viewer cannot be customized either. For example, if you want to make the default View mode PrintPreview.

The above require changes in the CSHTML template of the Preview, which would be reset upon the Report Server upgrade.

It would be great if the customization and localization of the Report Server Viewers became part of the configuration, allowing them to be preserved between upgrades.

Unplanned
Last Updated: 19 Dec 2025 15:08 by Joe
Created by: Joe
Comments: 0
Category: Report Server
Type: Bug Report
1
Currently, in a report stored on the Report Server, I cannot use embedded XML report definition for the Navigate To Report action.

This option is supported in the Telerik Reporting product, and I would like to see it supported in the Report Server as well.
Completed
Last Updated: 14 Nov 2025 10:06 by ADMIN
Release 2025 Q4
Created by: Fabio
Comments: 1
Category: Report Server
Type: Bug Report
2

HTML5 Report Viewer cannot connect to report server for .NET.

The old report server still connects us expected.

Completed
Last Updated: 12 Nov 2025 14:33 by ADMIN
Release 2025 Q4

Steps to reproduce.

1.  Configuration -> Mail Template -> Schedule Task Attachment -> Subject  set to empty.

2. Update and Save changes.

3. Access Reports

Completed
Last Updated: 17 Jul 2025 07:51 by ADMIN
Release 2025 Q3

Hi,

I'm trying to customize the interface language (english to german) of our report server web application without success. I set some language entries in the sr.user.js file in the script folder of the web application but the labels of the report server remain english. When I do this in the original file (sr.js) it works well.

Unplanned
Last Updated: 09 Jun 2025 07:47 by Andre

The Report Server mail templates have a variable named "link" which should provide a link to the exported document for the email receiver.

However, this link does not use the Report Server's public address set through IIS, instead, the link uses the "http://localhost:83" as a base URL for the link.

Please correct the behavior and/or allow for changing the links' base URL.

 
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