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Getting "An unexpected error occurred and your request couldn't be handled." when trying to use Outlook in Office365.
Also unable to retrieve emails with email exchange clients.
All got resolved by itself at the end of the day. Thank you for the suggested answer.
Thanks for posting here.
Before moving on, I would like to confirm if this error message happened in Outlook client or Outlook Web App (OWA).
If it is in client Outlook, as the connection is interrupt, would you please create a new Outlook mail profile and then add the Exchange Online account again to check the issue, to determine if it is caused by the corrupted data file (.pst or .ost).
How to create and configure an email profile in Outlook 2010, Outlook 2007, and Outlook 2003
If it is in OWA, it would be nice if you could clean up the web browsing history, temporary Internet files and Cookies to check if the issue persists? In addition, is there any other person experiencing a similar issue in your organization?
Thanks for your update. I'm glad to hear it has been resolved by itself.
If you have any other questions by using Office 365, please feel free to post in the forum. We will be more than happy to be of assistance.