SharePoint 2013: Troubleshooting Check Permissions – Windows auth
Update 11/24/19: Although the “Background” section below applies to all SharePoint versions and authentication types, this post is specific to Windows Authentication (NLTM or Kerberos) within SharePoint 2013. For SharePoint 2016, see this post: https://joshroark.com/sharepoint-2016-check-permissions-windows-auth/ For Forms-based authentication see this: https://joshroark.com/sharepoint-check-permissions-and-external-tokens-fba/ And for Trusted Provider (SAML) auth, see this: https://joshroark.com/sharepoint-check-permissions-and-external-tokens-adfs-saml-auth/ Why should you care? Having “Check
SharePoint: Troubleshooting “User cannot be found” and other mysterious user behavior
Update 11/16/20: Added PowerShell script near the end of the post that can be used to check all of your site collections for a specific User Information List problem. Some potential symptoms: Note: The above behaviors can occur for all users within the site, or just for specific users. Why does this happen? All these