Enabling PDF Previews in Document Libraries with Office Web Apps 2013 in SharePoint 2013 – Open link does not work from preview

Wictor Wilen has written a great blog post about enabling PDF previews in SharePoint 2013 document libraries with Office Web Apps 2013 which can be found here:


Wictor provides the WSP to provide PDF preview functionality and this works great, but some customers are running into issues when attempting to click "Open" on PDF previews generated from Office Web Apps 2013.  Users may see the following error:

"Sorry, something went wrong.  An error has occurred on the server."

Upon reviewing verbose SharePoint logs, you may see errors similar to the following:

w3wp.exe (0x3A88)        0x3B28        SharePoint Foundation        WOPI        ah6ud        Unexpected        Exiting GetWOPITargetInternal Early - GenerateWacUrl failed to produce a URL/actionEntry for file <filename>.pdf with extension 'PDF' StackTrace:   at Microsoft.SharePoint.Utilities.SPWOPIHost.GetWOPITargetInternal(HttpContext httpContext, SPWeb web, Object& spPrimeObject, SPWOPIAction& requestedAction, SPRegionalSettings spSettings, String& wopiAppUrl, String& wopiFavIconUrl, String& wopiAccessToken, Int64& wopiAccessTokenTtl, String& errorMessageToDisplay, String& redirectUrl)     at Microsoft.SharePoint.ApplicationPages.WOPIFrameHelper.OnLoadHelper(WOPIFrame frame)     at Microsoft.SharePoint.ApplicationPages.WOPIFrameHelper.OnLoad(WOPIFrame frame)

This issue is resolved by installing the following hotfix package on your SharePoint 2013 servers:

Description of the SharePoint Server 2013 hotfix package (Sts-x-none.msp): October 8, 2013.


Note about viewing PDFs in mobile browsers: 
There is currently no support for PDF viewing in mobile browsers.  You will receive a message "Viewing .PDF files has been disabled in Microsoft Word Mobile viewer".  To allow PDFs to open instead with the mobile browser default action, this capability has been removed as of Office Web Apps October 2013 Cumulative Update: http://support.microsoft.com/default.aspx?scid=kb;EN-US;2825686 

Comments (6)
  1. Anonymous says:

    thank you

  2. user says:

    Has this been fixed yet? I’d rather off open in native off viewer if MSFT does not support off in office web app mobile.

  3. MJ Waardenburg says:

    Is the capability of viewing PDF’s in mobile browsers fixed? Can you provide an update about this issue?

  4. MOSSuMS says:

    We would also like an update on OWA pdf viewing mobile support as our users currently see the misleading message "Viewing PDF files has been disabled in Microsoft Word Mobile viewer" and therefore think we can enable it.

  5. Felix Streit says:

    There is visibly a bunch to identify about this. I feel you made various good points in features also.

  6. User2016 says:

    Found this https://support.microsoft.com/en-au/kb/2912639 today. Last reviewed 05/02/2016

    The “MobileView” action was removed from the available Web Application Open Platform Interface Protocol (WOPI) actions for the WordPDF application. Also this feature is not available for Office Online Server.


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