WOPIFrame - Unhandled exception

Question

Hi,

I cannot upload document in library. I am getting this error

Unexpected

WOPIFrame - Unhandled exception: System.NotSupportedException: Can not create an identity context for system account user token.    
 at Microsoft.SharePoint.IdentityModel.SPIdentityContext.Create(SPUserToken token, Boolean isShareByLinkGuestUser)    
 at Microsoft.SharePoint.IdentityModel.SPIdentityContext.Create(SPUser user)    
 at Microsoft.SharePoint.IdentityModel.OAuth2.SPOAuth2SecurityTokenManager.IssueLoopbackTokenString(Uri endpointAddress, SPUser user, String applicationContext, DateTime& validTo)    
 at Microsoft.SharePoint.Utilities.SPWOPIHost.GetAccessToken(SPWeb web, Guid uniqueId, String proofKeyId, SPUrlZone zone, SPBasePermissions perms, Boolean hasEditLicense, Int64& ttl)    
 at Microsoft.SharePoint.Utilities.SPWOPIHost.GetAccessToken(SPFile file, String proofKeyId, SPUrlZone zone, Int64& ttl)    
 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)

Your response is appreciated, thanks!

Regards,

Frances

Answer 1

Hi Frances,

As I understand, you encountered the error when uploading document in library in SharePoint 2013.

Have you installed the office web app?

You could check things below:

1. Add SharePoint site to the trust site in IE.

2. Switch another account not the system account to check if it can work.

3. Check if the "Claim to Window Token Service" is running on the SharePoint server. You could go to start->administrator tools->services.

More reference:

There is a similar case:

https://social.msdn.microsoft.com/Forums/en-US/9cc65782-2476-4d32-aa4d-a068cef78c01/officewebapps-with-sharepoint-2013-giving-missing-access-token-message-in-uls-logs?forum=sharepointgeneral

The article below is about Installing the Office Web Apps Server Preview for SharePoint 2013.

http://www.surfray.com/blog/2012/08/02/installing-the-office-web-apps-server-preview-for-sharepoint-2013/

Best regards,

Sara Fan

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Answer 2

I hope the above suggestions clarifies your concern and lets you to get this job done.
Explains how to configure SharePoint 2013 to use Office Web Apps: https://technet.microsoft.com/en-us/library/ff431687

Office Web Apps 2013 Server Install and Configuration: https://stevegoodyear.wordpress.com/sharepoint-2013-build-guide/office-web-apps-2013-server-install-and-configuration/

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