Opening Excel 2010 files from Explorer takes several minutes

Question

I am running Excel 2010 on Windows 7. For the last year I have had no problems, but today I find that if I try to open any file from Windows Explorer (e.g. by double-clicking it), or from an item pinned to the Task Bar, it takes several minutes to open Excel.
If I open Excel directly it opens very quickly. I can also open any of the "problem" files in an instant when Excel is open (e.g. from the Recent Files list or from  the File...Open dialog). All of the files in question are on the local hard
disk.
I don't have this problem with MS-Word.
I saw another post here which recommended unchecking the "Ignore
other applications that use Dynamic Data Exchange (DDE)" option, but I didn't have this option set in the first place.
Does anyone have any other suggestions for fixing this?

Answer 1

Double click an excel file, when the excel loading window appears, start Task Manager, terminate the excel process, then re-open the excel file to test if this issue goes away.
Also someone resolved this issue by installing an add-in. Have a try.
File->options->Add-ins->Select "Excel Add-Ins" in Manage list box and click button "Go..." ->Tick the add-ins that you want and click button "OK" 
http://excel2007-slow-open-file.blogspot.in/