Release History

Progress® Telerik® Report Server 2026 Q4 (12.3.26.1110)

November 11, 2026

Official support for .NET 11

NEW

• Telerik Reporting adds support for .NET 11 for Reporting engine, REST Services, and Standalone Report Designer for .NET. The product installation includes examples targeting .NET 11

What's Improved

NEW

• PDF files generated with accessibility enabled now have a smaller file size.
• The MSSQL Storage Cache now scales better under heavy load.
• The Web Report Designer now lets users search and filter stored procedures in the SQL Data Source Wizard.
• The CSV Data Source Wizard now detects column data types automatically.
• Report Server page titles now support customer branding.
• Report viewers can now send custom headers with requests to the Reporting REST Service. Read more here.

What's Changed

CHANGED

• Values that round to zero no longer display a minus sign across supported .NET runtimes.

Desktop Designer

FIXED

• Opening a .trdj report with the "Zoom" property causes an exception.

Web Designer

FIXED

• Selecting a color palette causes an error that prevents report objects from rendering.
• The SQL data source preview table does not allow horizontal scrolling.
• The SQL Data Source Wizard cannot connect to MySQL.
• Remediated Security Vulnerability.

Paging

FIXED

• Items below a table appear before the table ends when a group page break splits it.

Processing

FIXED

• Rendering reports in parallel may cause concurrency-related intermittent errors.

Rendering

FIXED

• Remediated Security Vulnerability.

HTML Rendering

FIXED

• Checkbox captions can appear cut off when using fonts such as Verdana.
• Text in fonts such as Verdana may appear cut off.

Engine Common

FIXED

• Overwriting an existing file with ReportXmlSerializer.Serialize(path) leaves trailing content from the previous file when the new content is shorter.

Report Server

FIXED

• Updating scheduled tasks cancels running tasks and does not resume them.
• Remediated Security Vulnerability.
• Scheduled tasks do not retain selected values for multi-value report parameters.

Server .NET Web Designer

FIXED

• Importing a shared data source fails when the report designer is embedded.

Server Manager

FIXED

• The mail password cannot be reset when encryption keys are corrupted.

Preview

FIXED

• Exported documents do not retain the report's accessibility setting.
• The Excel export icon text appears incorrectly in the export dialog.
• Remediated Security Vulnerability.