Office Web Apps 2013 – Errors previewing/viewing/editing documents when using FBA in the extended zone, but not the default zone.

We have run in to several cases lately where customers have FBA authentication enabled in the extended zone, but not the default zone, of the web application, and will receive errors when trying to use the Office Web Apps.

The issue stems from SharePoint and is due to an error in the access token generation when a user tries to load a document in the Office Web Apps.

This is a known issue, but there is currently no timeline on when or if this will be addressed.

The current workaround is to configure FBA authentication in the Default zone of the effected web application

Comments (5)

  1. Anonymous says:


    Also, good article. Nice work.

  2. Darren Marsden says:

    I am facing a similiar issue on my ADFS extended Zone. Hope this is solved soon. OWA 2013 “expects” the default zone.

  3. sachin says:

    It did not work for me. Only difference on my scenario is different membership providers are used on default and extended zone. Should that make any difference?

  4. AB says:

    Only Word Doc edits are not working. Excel can be edited in-browser with the same WOPI configuration. Is there any COBALT Word Doc editing issues that MS can look at?

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