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Hello Nithin,
The reason for this warning message to appear is explained in details in the following blog posts:
Regards,
Daniel
the Telerik team
The reason for this warning message to appear is explained in details in the following blog posts:
MSDN blogs: Excel 2007 Extension Warning On Opening Excel Workbook from a Web Site
Grinn blog: "The file you are trying to open, '[filename]', is in a different format"
Regards,
Daniel
the Telerik team
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