Error: "Your logon has expired..." When using multiple Netscaler Gateways

Error: "Your logon has expired..." When using multiple Netscaler Gateways to access a single store on StoreFront...

Your Logon Has Expired. Please Log on Again to Continue

Whenspecific users logon to Storefront Workspace App for web without Netscaler gateway, after typing the username/password, the below error appears: Your logon has expired. Please log on again to continue...