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FAQ/XLS-Exports-Error-when-opened-in-Excel.md
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| 1 | +##Error: |
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| 2 | +'[filename]', is in a different format than specified by the file extension. Verify that the file is not corrupted and is from a trusted source before opening the file. Do you want to open the file now?" [Yes | No | Help] |
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| 3 | + |
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| 4 | +##Solution |
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| 5 | +There is no way to avoid this using our current HTML- Office export process: |
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| 6 | + |
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| 7 | +http://blogs.msdn.com/b/vsofficedeveloper/archive/2008/03/11/excel-2007-extension-warning.aspx |
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| 8 | + |
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| 9 | +This is an inherent part of Office security starting with Office 2007 when opening internet generated (HTML) files. |
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| 10 | + |
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| 11 | +The solution is to train your users to say 'Yes' to these particular files - because they specifically choose to open that file. |
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| 12 | + |
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| 13 | +You can also have disable this security feature in Office (2010 example): |
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| 14 | +[[Disable Protected Mode|/FAQ/disable-protected-mode-office-2010]] |
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| 15 | + |