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

Solution 1

1) Open Excel Go to File Options

2) Click Trust Center -> Trust Center Settings

3) Go to Protected View. there are 3 options that show that were all clicked. Uncheck the first option that reads -- "Enable Protected View for files originating from the Internet". In some cases as reported in the comments below both the 1st and 2nd options need to be unchecked (Thanks @mosheb)

Solution 2

Uninstall these Windows Updates:

• Windows Update KB3115262 (Excel 2013)
• Windows Update KB3115130 (Excel 2010)