:-( Some thing went Wrong

Error showing unable to connect office365 Mail

Can you please add a screenshot of your Problem?
This would help identify the issue.

Best,
Mark

Hi,

Do you mean Outlook Web App for Office 365 by "office365 Mail"? At which exact point will you get this error?

Could you please provide the complete error message, or as Mark suggested, attach a screenshot here?

If you are refering to the Outlook Web App for Office 365 (not the desktop version of Outlook), then I'd suggest you post in our dedicated forum of Office 365 Community - Email and calendar, where you can get more experienced responses:

http://community.office365.com/en-us/f/158.aspx

Regards,

Ethan Hua
TechNet Community Support