SYMPTOM
IE behavior to export report to Excel changes starting from Strategy Web 10.4.4 and 10.7.
In older versions, when trying to export report to Excel file from IE browser, a pop-up window is displayed as below:

In newer versions, the menu bar as below is displayed at the bottom of IE:

ACTION
This is per design due to the change to “force-download” parameter as stated in KB19099.
Below parameter is added to exportFormats.xml from Strategy 10.4.4 and 10.7 for exporting to Excel.
force-download="true"
HEAD /MicroStrategy/export/20170704162024251?n=/reportname.null HTTP/1.1 OPTIONS /MicroStrategy/export/20170704162024251?n= HTTP/1.1 PROPFIND /MicroStrategy/export/20170704162024251?n= HTTP/1.1 PROPFIND /MicroStrategy/export HTTP/1.1 PROPFIND /MicroStrategy/export HTTP/1.1 PROPFIND /Strategy HTTP/1.1 HEAD /MicroStrategy/export/20170704162024251?n=/XXXXXXXXXX.null HTTP/1.1 PROPFIND / HTTP/1.1 PROPFIND / HTTP/1.1
POST /MicroStrategy/export/ reportname.null HTTP/1.1