Release History

Progress® Telerik® Report Server 2026 Q3 (12.2.26.812)

August 12, 2026

Report Server for .NET now includes an MCP Server for AI-native administration

NEW

• Telerik Report Server for .NET now includes a built-in MCP Server that exposes report management and a wide range of other administrative operations, such as users, permissions, data connections, and scheduled tasks, as MCP tools authenticated via Personal Access Tokens. Read more here.

Report Server for .NET now offers a new version of its REST API

NEW

• Report Server for .NET now offers a new version of its REST API, with more consistent responses and error handling across all endpoints. Read more here.

Reporting NuGet packages are now published to the public NuGet Gallery

NEW

• Telerik Reporting NuGet packages are now available on the public NuGet Gallery (nuget.org), in addition to the Telerik private feed. This makes it easier to reference and restore Reporting packages in projects and CI pipelines that use the public gallery by default. Read more here.

JSON Report Definition Format for Reports

NEW

• Telerik Reporting now supports a new JSON-based report definition file format alongside the existing XML formats. It's easy to read and edit by hand or with AI coding assistants, produces clean version-control diffs, and can be validated in CI pipelines using a published JSON Schema. Read more here.

Reporting now supports Aztec barcode encoding and rendering

NEW

• Telerik Reporting now supports Aztec barcode encoding and rendering, adding another 2D barcode symbology you can use in your reports. Read more here.

What's Improved

NEW

• Excel document generation is now faster, thanks to optimized internal data structures.
• Report Server personal access tokens now support a Report Server API scope, in addition to the existing Report Viewer scope. Read more here.
• Collection Editors in desktop report designers now provide copy-paste functionality for their contents.
• The Standalone Report Designer now uses Unicode-aware (UAX#29) word selection when double-clicking in text fields.
• The Web Report Designer now allows copying the sample snippets shown for functions.
• The HTML5 Report Viewer's Report Preview Insights prompt now supports voice input via a microphone button.
• Report Server for .NET now offers an HttpClient library distributed as a NuGet package.
• The Standalone Report Designer now supports rearranging opened report tabs by dragging them.
• The Logarithmic scale of the Graph item now provides MajorStep and LabelStep properties for improved customization and readability.

XML Configuration

FIXED

• An assembly with a partial 'version' value is rejected as untrusted in the 'assemblyReferences' element.

Crystal Reports Converter

FIXED

• Parameter Fields are not converted to Report Parameters.
• Suppression formulas are not converted to a visibility expression.

Desktop Designer

FIXED

• The Import Code File Wizard shows a warning when using a non-English locale despite build succeeding.
• Double-clicking a word in the expression editor does not select the correct word boundaries.

Web Designer

FIXED

• A 404 console error occurs for a missing jQuery.UI icon.
• Font icons CSS is incompatible with the latest @progress/kendo-font-icons version.
• The WebServiceDataSource authentication selector fails to render when using non-English string resources.

Processing

FIXED

• A serialization exception is thrown when setting the NoDataStyle BackgroundImage of data items and PictureBox.
• HtmlTextBox does not preserve non-breaking space behavior between sibling inline elements.

Rendering

FIXED

• Graph labels and legends are not aligned when using the Skia rendering engine.

PDF Rendering

FIXED

• PDF export can incorrectly merge or duplicate distinct images that share pixel dimensions and similar content.

Word Rendering

FIXED

• A bullet list item that spans two pages gets a duplicate bullet.
• A numbered list that spans two pages restarts numbering at (1).

Server Manager

FIXED

• Favoriting a report fails for users with the "Report Reader" role.