Here's some more background. When you use MSOFFICE2K, you are not creating an Excel proprietary file just because you use an extension of .XLS and even with the Content-type header, Excel knows, when it goes to open the file that the "true" inner workings of the file are HTML and you are trying to "fool Excel" by naming the file XLS. Ever since Office 2007, you will get that snarky message from Excel when you try to open an HTML file that has been named as .XLS instead of .HTML. The only way to avoid the snarky message from Excel is to change the Windows registry, which is generally frowned upon or to do what you are doing and Save AS xls or just educate your users to click Yes when they get the message about the mismatch between the extension and the actual file contents. cynthia And, when you can use ODS EXCEL, you won't get that snarky message anymore. (something to look forward to)
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