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Could not retrieve a valid windows identity for username <DOMAIN>\<Username> Error

Discussion in 'SharePoint Blogs' started by /u/fariak, Feb 17, 2017.

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  1. /u/fariak

    /u/fariak Guest

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    Earlier this week, a few users started reporting that SharePoint would freeze when saving a document tied to a Nintex workflow, causing the workflow to not move on to the next step.

    We noticed the following error message pop up in our SharePoint 2013 ULS logs:

    SPSecurityContext: Could not retrieve a valid windows identity for username '<DOMAIN><Username>' with UPN '<Userid>@<DOMAIN>'. UPN is required when Kerberos constrained delegation is used. Exception: System.ServiceModel.FaultException`1[System.ServiceModel.ExceptionDetail]: WTS0003: The caller is not authorized to access the service. (Fault Detail is equal to An ExceptionDetail, likely created by IncludeExceptionDetailInFaults=true, whose value is: System.UnauthorizedAccessException: WTS0003: The caller is not authorized to access the service.

    This 2013 server was migrated over from 2010 a few years ago and authentication was converted to claims in the process.

    This is only occurring with 3 users out of 280.

    User Profile Synchronization service is started and working fine.

    Any help on this matter would be greatly appreciated. Thanks!

    submitted by /u/fariak
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