Everytime, when start the Excel 2013, it tries to open the "rsexcel.xll" automatically and pops up the following message.
"The file format and extension of 'rsexcel.xll' don't match. The file could be corrupted or unsafe. Unless you trust its source, don't open it. Do you want to open it anyway?"
Don't like it at all. Is there any method to fix it?