Last Updated: 24 Oct 2023 14:07 by Paul

In my MSSQL database, I use SQL Server Authentication with a password that contains '^' and '<'. I connect without problems through the MSSQL Management Studio.

When I try to pass the connection string with this user, I receive an Internal Server Error and cannot set up storage with it.

Last Updated: 20 Apr 2023 12:12 by ADMIN
If you previewed a report from the Report Server after more than 30 minutes of inactivity, there is an error message "Forbidden. Insufficient credentials."
Last Updated: 01 Nov 2022 08:25 by Josh
The reports are scheduled for the first of each month at 6 PM but are sent out on the last day of the month at 6 PM. The Next Occurrence is also set for the last day of the month at 6 PM.
Last Updated: 18 Jul 2022 11:21 by Atef

When I delete a report from the Reports page, it disappears from the list. However, its details are still visible.

When I refresh the page, the deleted report info disappears.

Last Updated: 27 Jun 2022 12:19 by Atef

The Report Server's built-in Web Report Designer does not resolve custom functions assemblies that are referenced in the TelerikReporting.config configuration and thus, on Design time, they are not visible under Functions -> Misc. 

The workaround around is to reference the custom functions assembly in the Web.config file in {install_dir}\Telerik.ReportServer.Web


Last Updated: 24 Jun 2022 08:20 by Suresh Agarwal

When I try to set a new SMTP I receive the error:

An error occurred while saving the settings: The changes were not applied!

There is nothing logged by the Trace Listener or in the Windows Event Viewer.

Last Updated: 23 May 2022 07:15 by hkdave95

I am trying to edit an existing user, and before changing anything I receive the error message 'The email is already taken!'. This happens occasionally.

Here is a link to a video that demonstrates the problem.

Last Updated: 30 Mar 2022 12:56 by hkdave95

Edit User Dialog cannot be closed through the Cancel/Save button after resetting the user's password. The issue appears to happen when the password is auto-filled.

Even though the dialog cannot be closed through the Cancel/Save button, it closes successfully through the button in the top right corner. However, that user will no longer be visible on the page needs to be reloaded.

Last Updated: 06 Jan 2022 11:47 by ADMIN

The CommandTimeout property of the MSSQL Storage is respected when provided in the ReportServerAdmin.config of the Report Server, for example with the following code:

<?xml version="1.0" encoding="utf-8" ?>
    <section name="reportServer" type="Telerik.ReportServer.Web.Configuration.ReportServerConfigurationSection, Telerik.ReportServer.Web" requirePermission="false" allowLocation="true" />
    <storage provider="MsSqlServer">
                <parameter name="ConnectionString" value="Data Source=(local)\MSSQLSERVER01;Initial Catalog=RESTStorage;Integrated Security=SSPI" />
		<parameter name="commandTimeout" value="360" />

The user should be able to provide this value from the Configuration page for the Storage settings, as this is done for the connection string.

Last Updated: 28 Sep 2021 13:26 by ADMIN
I am using the Telerik ReportServerClient to create, update, and delete subscriptions on our Report Server from our MVC application.

I am able to set all features that I need to set, except the first dropdown of the "Repeat On" section of the recurrence rule. 
Last Updated: 24 Sep 2021 08:55 by ADMIN

We cannot delete reports using the Report Server UI. After you select the report and choose to delete it, the report appears as removed from the list, even though the details are still visible. If you refresh the page, the report is still there.

Further investigation revealed that the ServiceAgent is not running. There is no proper error message indicating this though.

The issue is reproducible only with the Report Server running under HTTPS. When under HTTP there is a proper message stating that the ServiceAgent is stopped.

Last Updated: 21 Apr 2021 08:20 by ADMIN
Attempting to login with "Active Directory Credentials" throws an exception - A potentially dangerous Request.Form value was detected from the client (wresult="<t:RequestSecurityTo...").
Description: ASP.NET has detected data in the request that is potentially dangerous because it might include HTML markup or script. The data might represent an attempt to compromise the security of your application, such as a cross-site scripting attack. If this type of input is appropriate in your application, you can include code in a web page to explicitly allow it. For more information, see http://go.microsoft.com/fwlink/?LinkID=212874.
Last Updated: 25 Mar 2021 08:48 by ADMIN

In a Scheduled Task created with the Report Server API, the day of the week in the recurrence rule is not shown in the Edit Task window of the Report Server Manager. A detailed description of the issue is available in this forum post.

Last Updated: 27 Jan 2021 11:53 by ADMIN
I have a number of scheduled tasks that use report parameter values from the report in the body of the email.  If I untick the "use default value" checkbox of a DateTime parameter, it is replaced with the DateTime. However, if the checkbox is selected, the placeholder is not replaced with the value and is displayed as it is in the mail template, e.g. "{@createdDate} ". The String parameters are never replaced with the actual values. This can be observed in versions and
Last Updated: 01 Oct 2020 07:57 by ADMIN

Getting this error in the browser when trying to preview a report:

Error registering the viewer with the service.
An error has occurred.
Incorrect value (null) deserialized. Make sure you are using CacheStorage inside single-instance application deployment only.

A possible reason is the cache for the Report Server used for previewing reports has become corrupted. A workaround is explained in the Telerik.Reporting.Cache.CacheStorage.AddInSet NullReferenceException KB article.

It will be very convenient for the user to be able to clear the cache directly from the Report Server Manager UI.

Last Updated: 08 May 2020 15:16 by ADMIN

If you set a default value of integer subreport parameter to '3233' or another valid integer, when executing the main report there will be an exception stating that the value for this parameter is not valid and the report processing is canceled. The parameter exists only in the subreport and not in the main report.

The error disappears if the value of the parameter is set with an Expression, for example, '=3233'.

Last Updated: 16 Oct 2019 12:27 by ADMIN
After upgrading to version it is no longer possible to open a new report or edit an existing one with the designer deployed through the ClickOnce technology. The issue reproduces also with version
Last Updated: 23 Jul 2019 13:24 by ADMIN
The Service Agent is supposed to be notified and wake up from its sleeping cycle (180s) when a scheduled task is executed immediately. Sometimes this does not happen and leads to reports being executed with 180s delay.