We recently had to remove the excel2007 feature package from our enterprise license file because it was causing out-of-memory issues. After loading the updated license file without the excel2007 feature package included, the XLS option is still visible when generating a report.
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Check the configuration.xml file whether the value "isTestSystem" is set to "true" or not? The customer can also send us that file for analysis. On such test systems, the Excel 2007 feature is enabled by default. If it is enabled, please change this value to "false", as that should then fix the issue.
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