Active Directory Single Sign-On
In order to enable Windows SSO authentication for generated clients:
Update TSplus Remote Access to the latest version on a server joined to the domain.
Generate a client from the Client Generator, checking the “Enable Single Sign-On (SSO)” box in the “Security” tab.
Connect from a machine joined to the domain using the generated client.

Configuring Group Policy for Windows Single Sign-On (SSO) via Remote Desktop Client
From the domain controller:
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Open the Group Policy Management Console. 
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Right-click on the Organizational Unit (OU) where the Group Policy Object (GPO) should be applied and select “Create a GPO in this domain, and Link it here…”. 
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Name the GPO (e.g., SSO_RDS_MY_SERVER) and click “OK”. 
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Right-click on the created policy and select “Edit”. 
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Navigate to the following location: “Computer Configuration / Policies / Administrative Templates / System / Credentials Delegation.” 
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Double-click on “Allow delegating default credentials” to open the settings. 
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Enable the setting and click “Show…” 
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In the Value field, enter the server(s) in the format TERMSRV/server_fully_qualified_domain_name and click “OK”. 
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Click “Apply” and “OK” to close the window. From the client machine: 
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Update group policies by running the following command as an administrator: gpupdate /force.