Microsoft is working to resolve a known issue that prevents some users from opening Excel email attachments in the new Outlook client.
Those of you who use classic Outlook may have noticed the program acting more temperamental than usual. There's a reason for that. In a recent support article, Microsoft acknowledged that Outlook may ...
XDA Developers on MSN
Sorry, the new Outlook app can't open some Excel attachments, says Microsoft
There is a workaround, though.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results