Category: Authentication

SharePoint: Windows auth user not equal to SAML auth user

I’ve been over this concept with customers and support engineers so many times, that I’m not sure why I haven’t posted about it before. My colleague Adam posted on this topic a while back, but I wanted to expand on that a bit. The Setup: Let’s say you have a SharePoint (2013, 2016, 2019, Subscription

SharePoint: Troubleshooting the Security Token Service (STS)

STS Background: In SharePoint 2010, 2013, 2016, etc, the Security Token Service (STS) is a web service hosted under the “SharePoint Web Services” IIS site on HTTP port 32843 and HTTPS port 32844, in a virtual directory called SecurityTokenServiceApplication. In SharePoint 2010, it contains 2 web services:Securitytoken.svcWindowstokencache.svc In SharePoint 2013 and 2016, it contains 3

SharePoint: Check Permissions and External Tokens – FBA

This post is a similar to my previous post on Check Permissions, except here, we’ll be talking about Forms-Based Authentication (FBA). The way “Check Permissions” works varies by authentication method. For Windows or Trusted Provider auth, see my other posts: Windows-Claims Authentication: Trusted Provider Authentication:   With Forms-Based Authentication, all of the same

SharePoint 2016: Office documents prompt for authentication on anonymous site

  Consider the following scenario: You have a SharePoint 2016 site that has been enabled for anonymous access. You have some Microsoft Office (Word, Excel, PowerPoint, etc) documents in a library that anonymous users also have access to. A user clicks on a (for example) Word document to open it. They receive a credential prompt,

SharePoint: Users forced to re-authenticate unexpectedly

This post covers the scenario where users log in via a trusted provider / SAML-claims  (like ADFS, Ping, Site Minder, etc) and intermittently, they are redirected to the login page to re-authenticate. There are a few pieces of information you need for a scenario like this (beyond the regular scoping): 1. Output of Get-SPSecurityTokenServiceConfig 2. A Fiddler

SharePoint: Facts and Troubleshooting the Claims To Windows Token Service (C2WTS)

Update: 3/31/22 — Added a reference to a related post from my colleague Mike: Unable to start the C2WTS Update: 8/5/19 — Made an amendment to Fact #3. Facts: 1. The Claims to Windows Token Service (from here on denoted as “C2WTS”) is only used when SharePoint needs to get data from an external system that

SharePoint: Issues with profile pictures when MySite uses SAML auth

  There are a couple known issues with user profile pictures when your Mysite web application uses Trusted Provider (ADFS / SAML) authentication. Symptoms There are two different known symptoms with the same cause and solution: #1When running User Profile Synchronization, nothing is imported or exported. In the Forefront Identity Manager (FIM) client, we see