I am having an issue opening the file when exporting a RadGrid to excel in a 64 bit version of IE. The same page works fine with the 32 bit version of IE. When it fires off the export function you get prompted to open or save the file. In both versions when you save the file you can open it just fine but in the 64 bit IE8 version when you click the open option nothing happens. The open works fine in the 32 bit version of IE. I was wondering if the telerik people experienced this behavior also. Is there a browser setting that might influence this behavior? Thanks in advance for any help.