I bought a surface 2 yesterday and am unable to open excel attachments from outlook. I can open both Word and Power point attachments. When I click on the excel attachment from the outlook email, excel opens up and then gives the message "Excel cannot access (file name). The document may be ready-only or encrypted." I click OK and another message pops up: "(file name) cannot be accessed. The file may be corrupt, located on a server that is not responding, or read-only." I tried modifying the options from the Trust Center in Excel options but this did not help. I also tried saving the attachment to my documents, but get the same error message when I try to open it.  I can open the same exact attachment from my Gmail account and it opens successfully, so it must be something wrong with the Outlook-Excel interface. Help would be appreciated. Thank you.