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Telerik Report Server

Release History

Progress® Telerik® Report Server R1 2020 SP1 (

February 19, 2020

Add WebServiceDataSource Timeout property

  • The property enables control over web request duration.

Support cookie-based two-factor authentication in WebServiceDataSource

  • Add support for web services utilizing cookie-based two-factor authentication, including OpenEdge application server.

Add version to the web viewers and designer resources requests

  • This will reduce the chances for using old resources and enable better resources cache for already available resources

What's Improved

  • Add a parameter to Round() built-in math function that specifies the number of fractional digits used for rounding
  • Send Email is now with predefined 'From' field

Web Service Data Source

  • In design time the data is requested from the service when both inline JSON and service URL are set

Desktop Designer

  • LineType changes only in Preview Mode
  • Renaming calculated field to the name of deleted field throws error
  • Adding reports with spaces in the name breaks the Report Book
  • WebDesigner under Report Server UI not working

Web Designer

  • An error occured while loading the data schema for WebServiceDataSourceName JSON.parse: unexpected character at line 1 column 1
  • Changes to the DataSource property of a data item are not saved in the report definition
  • Context menu items contain incorrect "Edit" entry when the selection is changed through the design surface
  • DataSource schema is not cleared when the connection string or another relevant field is reset
  • Delete command on Style sheet from Explorer tree does not work
  • Graph's axis misses CrossAxisPositions editor
  • Report parameter cannot be deleted from Explorer
  • ReportParameter.AvailableValues.DataSource is not set correctly
  • Setting DataSource to none corrupts the report definition
  • The SQL DataSource Wizard does not skip the parameters pages when no SQL parameter is needed
  • WebServiceDataSource properties are not saved correctly
  • An error appears in the console when the SQL DS wizard finishes
  • Crosstab wizard closing animation lags
  • Expression editor does not insert the selected value on the cursor position
  • Multiselect of explorer tab doesn't work in IE11
  • Multi-selection can't be deselected
  • Removing DataSource doesn't reset the data item DataSource property
  • The SQL DataSource Wizard's Preview page does not clearly notify the user if no data is retrieved upon command execution


  • Boolean Report Parameter value not updated when evaluated from another parameter
  • PaperSize Custom doesn't calculate the height correctly
  • When a symbol is not supported by the Encoder of a Barcode item a non-informative error is thrown

CSV Rendering

  • Rendering a report with Choropleth item causes an error

HTML Rendering

  • When exporting report containing images to HTML or HTML5, the image files referred in the html lack extensions


  • File Cache of the reporting engine is not cleaned by the REST Service


  • The Print button doesn't invoke print dialog in Chromium Edge

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