Opening excel files from the internet opens a blank excel window

Question

A method in dumping a GridView to an Excel file to download/open from the internet was recently broken with new Windows Updates.

My code dumps from a GridView to an

Answer 1

Per Raniel66's suggestion, if the excel opens as blank even after adding the site to your Trusted Sites list, you may try/suggest below work around.

Open excel workbook even though it is grayed out/blank, then click on ‘View’ tab in the excel and then click on 'full screen/maximize screen icon' as shown in screen shot below. This is what worked for me.