OBIEE11g Error: "Excel cannot open the file 'filename.xlsx ' because the file format or file extension is not valid" when Exporting to Excel with IE 8

(Doc ID 1578294.1)

Last updated on OCTOBER 16, 2014

Applies to:

Business Intelligence Server Enterprise Edition - Version 11.1.1.7.0 and later
Business Intelligence Suite Enterprise Edition - Version 11.1.1.7.0 and later
Information in this document applies to any platform.

Symptoms

You are using OBIEE 11.1.1.7.0 with Internet Explorer 8.  When you exporting a large report to Excel 2007+, it fails with the following error:

Excel cannot open the file 'filename.xlsx ' because the file format or file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file.

You only get this error with Internet Explorer 8, the export to Excel 2007+ works fine in another browser.

Cause

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