- You have a report that contains only one text box in Microsoft SQL Server 2012 Reporting Services (SSRS 2014).
- You set the expression for the text box to Chr (n), where n is a C0 control code (nonprintable code) value other than one of the following:
9 (U+0009 TAB),
10 (U+000A LINE FEED),
13 (U+000D CARRIAGE RETURN),
C0 control character value (0 to 31).
- Render the report, export it to Excel (Office Open XML format - xlsx), and then open the Excel workbook.
If the report contains C0 control codes in this scenario, the Excel OpenXML rendering extension that’s included in SSRS 2012 produces workbooks that Excel recognizes as invalid.
Note The issue also occurs in SSRS 2008 R2.
Article ID: 2922935 - Last Review: 23 May 2014 - Revision: 1