If you're currently running the DualShield Windows Logon 5.x, and are planning to upgrade to the Windows Logon 6.x, then you must read the instruction below carefully.
In some rare environments, the DualShield Windows Logon 5.x suffers from some network related issues. Those issues are difficult to reproduce hence difficult to fix. It was diagnosed that those issues were rooted in the networking technology used in the software. Therefore, we decided to change the networking technology in the DualShield Windows Logon 6.x in order to avoid those network-related issues in 5.x.
Furthermore, in consideration of the fact that there are a large number of customers and users who are using the DualShield Windows Logon 5.x, we decided that the Windows Logon 6.x would not replace Windows Logon 5.x. Instead, it would be able to run in parallel to the Windows Logon 5.x. This way, customers do not have to rush and upgrade their DualShield Windows Logon clients throughout their entire user base. Instead, they can upgrade only those users and PCs that are affected.