If you notice that your Excel files are opening in Notepad, then read this post to learn how to fix the issue. The default behavior of a document or file is to open in the application with which it ...
Microsoft is working to resolve a known issue that prevents some users from opening Excel email attachments in the new Outlook client.
XDA Developers on MSN
Sorry, the new Outlook app can't open some Excel attachments, says Microsoft
As spotted by Bleeping Computer, Microsoft has published a new service alert related to Outlook. Labelled as issue EX1189359 and titled "Users may be unable to open Excel files attached to email ...
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