FortiClient uninstalled after upgrade from EMS

Hi,

We have an EMS server version 6.0.5 coupled to the Active Directory. We assigned a profile to the computers so that the FortiClient installs and updates automatically. We noticed that on roaming computers (those using VPN), when an update is automatically deployed, the FortiClient is no longer present on the user's computer after a reboot. This is awkward because the user can no longer connect to the VPN. So we have to manually re-download the application to the computer and manually enter the EMS server IP. Computers that are connected in LAN in the company do not have problems: after a reboot, the latest version is automatically reinstalled. Is this normal operation?

Julien