Not able to access OWA after O365 tenant upgrade to Wave15 – EXO


Your Exchange Online (O365) tenant was recently upgraded to the new release of Wave 15. After which Users are not able to access their mail via OWA.

Once you sign-in to the MOP -> Click Outlook. It goes Blank, does not show anything and Inbox is not accessed.



This issue will occur if you are using IE8 on the machine. Mostly you will face with XP machines who are still on IE8 and not upgraded to IE9. As of now this is a known issue with IE8 performance and Wave15 O365



Upgrade to IE9 or above for better use of latest Wave15 features and Functionalities.


Note:- If you are not facing this issue and there are other issues with your O365 tenant after upgrading to Wave15, please contact Microsoft Support.


Comments (1)

  1. shipra sagar says:

    I am not a programmer but I have this SQL subject this session and have to prepare for it. What all topics should be covered in it?

    And has anyone studied from this course of SQL tutorial online?? or tell me any other guidance…

    would really appreciate help

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