This is a lil bit urgent, our client has 56 licenses of Microsoft Dynamics NAV. They are using a 5.0 version, but when they upgraded to 6.0 version, it came down to 3 licenses working only. What should be the cause and solution for this? I hope you can give us feedback to the soonest.
You will need to check with Microsoft , as far as I know you need to get an upgraded license for version upgrade. You can most probably do this via Partnersource too.