Last Updated: 31 Jan 2024 11:11 by ADMIN
Release 2024 Q1

On some system configurations, the setup wizard throws the following error when upgrading the Telerik Report Server from version R2 2023 SP1 to version R3 2023 SP1.

To work around the issue, one can uninstall the previous version first and install the new one afterward.  

Last Updated: 15 Nov 2023 15:07 by ADMIN
Release 2024 R1 PI1



I recently upgraded our Report Server that was hosted in IIS with an HTTPS binding but after the upgrade we were unable to communicate with the server using HTTPS. We received an invalid client id error.

We updated the bindings and everything worked. However, it would be nice if we could upgrade Report Server without changing the IIS bindings.


Thank you.

Last Updated: 20 Jul 2023 15:16 by ADMIN
Release 2023 R2 SP1


I was on a remote web session with an engineer and we discovered that the Scheduler UI isn't saving the changed password to the database. 

The environment that I use is below. 

  • Report Server is installed in an Azure Virtual Machine
    • IIS is bound to ports 443 and 83
  • The SMTP Service is on RackSpace
  • The storage is located in SQL Server

The steps to reproduce are as follows.

  1. Change the Password
  2. Save the Changes
  3. Send Test
  4. Receive Error output

During the Remote Web Assistance Session, we tried a Gmail SMTP server and received the same results. 

We also enabled tracing and noticed an error in the event logs which I will attach here. 

Please let me know if you need any additional information.

Last Updated: 15 Mar 2023 11:25 by ADMIN
Release R1 2023 SP1

The 'report name/Shelve' path seems to be broken.

For example, when I try to preview the report in Server > Web Preview in the Standalone Designer connected to the Report Server, the browser tries to open the URL 'reportServerHost/Report/View/CategoryName/ReportName/Shelve'. However, it hangs and doesn't display anything.

Last Updated: 20 Jan 2023 15:50 by ADMIN
Release R1 2023
The Guest User can not use the search functionality in the report. It gets the error "Authorisation has been denied for this request".
Last Updated: 04 Aug 2022 13:35 by ADMIN
Release R2 2022 SP1 (Latest Internal Build)
Created by: Colby
Comments: 1
Type: Bug Report

Hello, almost every time I select a scheduled task that I have to scroll down to select in the Scheduling tab, the grid view jumps back up to the top of the task list, making it very annoying to look through tasks.


1. Open Scheduling tab.

2. Scroll down in scheduled task grid view below the first N rows displayed.

3. Select row corresponding to a scheduled task.

4. Task grid view returns to the top N rows of the scheduled tasks.


Thank you

Last Updated: 11 May 2022 10:24 by ADMIN
Release R2 2022

If you unselect all the days from the Day of the Week in the recurrence rule of a scheduled task of data alert, the task can be saved but will throw an Internal Server Error and you won't be able to list the available tasks on the server.

The linked muted video demonstrates the problem.

Here is the error stack trace produced by the ServiceAgent:

Telerik.ReportServer.ServiceAgent.exe Information: 0 : Loaded 37 tasks in total.
Telerik.ReportServer.ServiceAgent.exe Error: 0 : System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at Telerik.WinControls.UI.Scheduler.ICalendar.CalHelper.TryParseRecurrenceRuleProperties(RecurrenceRule result, IEnumerable`1 keywordPairs)
   at Telerik.WinControls.UI.Scheduler.ICalendar.CalHelper.TryParseRRuleCore(String valueToParse, RecurrenceRule& result)
   at Telerik.ReportServer.Web.Utils.Appointment..ctor(DateTime startUtc, String recurrenceRule)
   at Telerik.ReportServer.ServiceAgent.Tasks.TaskInfo.UpdateNextOccurrenceTime(DateTime utcFrom, DateTime utcTo)
   at Telerik.ReportServer.ServiceAgent.Services.SchedulingService.CalculatePendingTasks(List`1 pendingTasks)
   at Telerik.ReportServer.ServiceAgent.Services.SchedulingService.MainLoop()
   at Telerik.ReportServer.ServiceAgent.Services.SchedulingService.StartMain()

Last Updated: 25 Apr 2022 16:14 by ADMIN
Release R1 2022 SP1
If the Enable Web Report Designer setting is marked, it would be nice if the Telerik Web Report Designer is opened when New Report is clicked.
Last Updated: 20 Jan 2022 12:01 by ADMIN
Created by: Mhd.Ahd
Comments: 1
Type: Feature Request
Add a "Shared resources" directory to contain images and logos used by hosted reports.
Last Updated: 13 May 2021 11:19 by ADMIN
Created by: Mhd.Ahd
Comments: 7
Type: Feature Request
I'm using Crystal Enterprise for a longtime, and would like to replace it with that tool.
 On of the most useful feature is scheduling (for time-hungry reports, that takes more than 20 minutes to be generated).

It will be a plus if you add:
* The ability to choose the Execution start time, and frequancy; and to enable or disable the schedule job without lossing it.
* Add a menu item called "Schedule Jobs", to view all schedule jobs of any accessible report (per profile; Admin can see all categories by profiles).
* The ability to execute on-demond (execute disabled or enabled schedules for prepared parameters).
* The ability to sign the generated PDF.
* The ability to send generated PDF to mail (one or more), and to set the mail subject and body.
* nerated PDF to folder (local, remote with auth) or FTP.The ability to save the ge
* The ability to view schedule execution history, and view its result; and Add option to clear old results.
* No "time out" for longer generation process.
* Schedule jobs queued per user profiles;
* Admin can set priority to user profiles (to execute queued jobs), and can cancel jobs.
Last Updated: 24 Feb 2021 15:54 by ADMIN
Release R1 2021 SP1
The CORS is enabled in the Report Server for all domains. This makes the application vulnerable to CORS attacks. The problem may be avoided by making CORS configurable.
Last Updated: 24 Feb 2021 10:04 by ADMIN
Release R1 2021 SP1

I create a Report Book in the Standalone designer that is connected to my Report Server. When I add the first two reports, the Report Book is rendered as expected. When I add the third one, it fails with the exception:

Report processing was cancelled.
Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

Here is a link to a short video demonstrating the problem. All the individual reports run correctly.


Last Updated: 24 Feb 2021 10:04 by ADMIN
Release R1 2021 SP1
I updated our Telerik Report Server to Afterward, the users with custom roles could no longer see report categories.
This leads to users not being able to open the report from the table and sends them to a bad URL since the category is undefined.
Last Updated: 20 Jan 2021 14:04 by ADMIN
Release R1 2021
Created by: Waz
Comments: 1
Type: Bug Report



I have a report that is scheduled to happen first day of every month. The thing is that when I look at the next occurrence of the report, it is happening on the second day of the month. I am attaching the report settings herewith. Please let me know if you have a solution/ explanation to get this corrected. Thanks a lot in advance.



Last Updated: 18 Nov 2020 10:24 by ADMIN
Release R3 2020 SP1 (Latest Internal Build)
Our server time updated according to daylight savings time and fell back an hour.  The report scheduler, however, is sending out reports an hour early instead of using the server time.
Last Updated: 21 Oct 2020 12:15 by ADMIN
Release R3 2020 SP1
Users which only have access to their own categories can see the categories of the other users when they perform filtering - see the attached image.
Last Updated: 21 Oct 2020 12:15 by ADMIN
Release R3 2020 SP1
We have done a security analysis and we found that there are some vulnerabilities with the default Telerik reports project as below.

Poor Error Handling: Unhandled exception

Error pages containing stack traces were found on these pages: POST parameters: __RequestVerificationToken, Email POST parameters: __RequestVerificationToken, Username, Password, RememberMe, ReturnUrl$39cae14f81d$9809a8279f1$72d6f30af5b7ed1809a23e

Stack traces are call chains of line numbered source code that usually result from unhandled exceptions. Unhandled exceptions are circumstances in which the application has received user input that it did not expect and doesn't know how to deal with. In many cases, an attacker can leverage the conditions that cause these errors in order to gain unauthorized access to the system. Recommendations include designing and adding consistent error-handling mechanisms that are capable of handling any user input to your web application, providing meaningful detail to end-users, and preventing error messages that might provide information useful to an attacker from being displayed.
Last Updated: 21 Oct 2020 12:15 by ADMIN
Release R3 2020 SP1
Having debugging turned on comes at a significant performance cost.
Last Updated: 21 Oct 2020 12:15 by ADMIN
Release R3 2020 SP1

There are vulnerabilities in the Report Server related to Cross-Site Scripting.

Last Updated: 17 Sep 2020 03:59 by ADMIN
Created by: Greg
Comments: 3
Type: Feature Request
In many cases one can't simply ask users to download an installed report builder. The reports should be buildable in a web based tool.
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