IIS 5 & IIS 6
disable popup message while opening excel with data
Re: disable popup message while opening excel with data
Sep 12, 2018 07:09 AM|deepakpanchal10|LINK
I think the issue is more related to Excel. Your code open the excel using Excel’s default setting and Excel popup the message. And as far as I know, we could not add extra code to change the Excel’s setting in the code.
According to the error message, I would suggest try to check if adding your CAD_All_Report.xls as a trust source in Excel could resolve the issue.