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#1
11-24-2010, 10:45 AM
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XLS vs. XLSX
Hi,
I am using Office 2010 on a Win7 system. I've been sent 4 attachments, 3 x .XLS and 1 x .XLSX, by email, via my client Thunderbird 2. The .XLS attachments open without issue but the .XLSX attachment, after running Excel automatically (I had to associate these files with Excel via Thunderbird), presents a warning message about possible corruption and ask if I trust the source. What is causing this and can this message be suppressed please? Thank you 
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| 2010, attachment, xlsx |
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Windows 7 
Office 2010 (Version 14.0)
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