Export function fails to instantiate Excel

Document ID : KB000045322
Last Modified Date : 14/02/2018
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Issue/Problem/Symptoms: 

Export report, but Excel doesn't open. The process worked perfectly until Security Update for Microsoft Excel 2013 (KB3115262) 32-Bit Edition was pushed.

Environment:  

Microsoft Windows

Cause: 

Update for Microsoft Excel 2013 (KB3115262) 32-Bit Edition

Resolution/Workaround:

Sustaining Engineering research indicates that KB 3115262 is going to break pretty much any application that generates Excel files, Web Viewer included.

- This is Microsoft's work-around (until they fix it)...

https://blogs.technet.microsoft.com/the_microsoft_excel_support_team_blog/2016/07/22/excel-workbooks-may-not-open-after-installing-ms16-088/

- A better way of addressing the problem is to un-install the Excel update and prevent it from being installed.


Additional Information:

CA cannot fix this from Web Viewer. The Excel files it generates are actually HTML files (that follow special rules) with an XLS file extension - KB 3115262 now blocks this kind of content.