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Telerik Report Server

Release History

Progress® Telerik® Report Server R1 2021 (

January 20, 2021

.NET 5 Support for desktop viewers and REST service

  • Added support for .NET 5 in the WinForms and WPF report viewers as well as the REST service which they can use as a remote report generation engine.

Support for form type reports

  • Two major improvements aid the creation of form type reports: 1) allow the users to add and render an image as a background in the report designer; 2) allow the users to draw vertical lines or rectangles across one or more report sections.

Table context menu commands

  • Added List, Table, and Crosstab cell commands for inserting and deleting columns and rows, adding totals, adding or deleting groups and more. The commands are present in the Explorer's context menu for each cell.

What's Improved

  • Dynamic Height can be applied on page sections using Binding
  • The installer now provides an option to select whether the Report Server Manager and Service Agent will be installed in 32-bit or 64-bit mode

What's Changed

  • The member Normal of the Telerik.Reporting.Drawing.WatermarkSizeMode enumeration is now obsolete and substituted with the Center member. The enumeration is used in the Telerik.Reporting.Drawing.PictureWatermark.Sizing property.
  • The Telerik.Reporting library build for .NET Standard 2.0 that all .NET Core apps reference now depends on the System.Text.Json NuGet package version 5.0.0 and its internal dependencies
  • TRDX, TRDP and TRBP files created by the Standalone Report Designer now use schema version http://schemas.telerik.com/reporting/2021/1.0
  • All web assets depending on the Kendo UI for jQuery suite (HTML5-based report viewers, Web report designer, Telerik Report Server) now require Kendo JS and themes version 2020.3.1118 or later.

Desktop Designer

  • The caption of the checkbox that determines whether to treat consecutive record separators as one in CSV data source wizard is incorrect.
  • TOC section is not rendered in Report Designer and "The operation was cancelled" text is shown instead.
  • The DataSource instances in InstanceReportSource's ReportDocument are incorrectly serialized
  • The title of the base wizard form shows incorrect text

Web Designer

  • Crosstab Wizard, Table Wizard and Charts' styles are broken
  • Exception is thrown when some of the Table/Crosstab nodes are selected in the Explorer tab
  • Opening a report containing ObjectDataSource with parameters throws an exception
  • Web Report Designer item template does not add Trial packages when used in a .NET Core project
  • Previewing data in the WebServiceDataSource wizard with .NET Framework backend throws '404 Not Found'
  • Changing the data source in the CSV data source wizard from external file to inline data is not saved in the definition
  • ReportExplorer tab does not display text when jQuery 3.5.1 or later is used
  • ReportParameter.AvailableValues Filters and Sortings collections throw errors in console
  • The DisplayMember and ValueMember properties in report parameters' AvailableValues display incorrect DataSource
  • When using the Table Wizard in the WebReportDesigner, after selecting a DataSource for the table, the column names don't appear


  • One or more pages are missing from the end of the rendered document in some specific cases of multiple Tables nesting within Panel
  • PageHeader Height Binding may result in compromised paging

Data Binding

  • The JsonDataSource data is not refreshed when its data source is modified through Bindings in a nested data item


  • Shape-based report items do not use Style.LineColor to draw their shape primitives

PDF Rendering

  • PDF documents containing SVG files cannot be opened in Adobe Acrobat or Adobe Acrobat Reader
  • Vector-based SVG rendering does not support transformations on nested elements
  • Vector-based SVG rendering doesn't respect viewbox offset
  • Vector-based SVG rendering is performed incorrectly when the machine's DPI is greater than 100%


  • Creating a Scheduled Task for the first day of the month sets an incorrect date
  • Scheduled task time is incorrect after a daylight-saving time update

Server Manager

  • Daily recurrence rule is not applied
  • Scheduling Tasks index page shows Next Occurrence even if there is none


  • Zooming-in makes the report content smaller when PageMode is set to SinglePage

Telerik Report Server

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