Thanks to all in advance,
I have a Notes 6.5.5 Client user running on Windows XP version 2002 service pack 2. He gets the following error only with Excel attachments, and with all Excel attachments. "Sorry, an application to open this document cannot be found." The attachment has the .xls extension and can be viewed with the Notes viewer fine, but cannot be opened. Also when detached and saved to the hard drive, Windows opens the attachment fine, therefore the OS knows to use Excel when opening .xls files, but I am unable to figure why the file can't be opened directly from Notes. Any suggestions? Thanks again.