Applies to StorageGRID 11.4 AD FS 4.0 (Windows Server 2016) Issue SSO is set to sandbox mode. The correct configuration has been entered and validated as per Configuring Single sign-on. When visiting ...Applies to StorageGRID 11.4 AD FS 4.0 (Windows Server 2016) Issue SSO is set to sandbox mode. The correct configuration has been entered and validated as per Configuring Single sign-on. When visiting the identity providers sign-on page, the site/login page appears. SSO Credentials are entered. After authentication page displays: Error Code: 500 "A configuration or network error is preventing authentication. See logs for details or contact Technical Support."