You've noticed that a machine is flagged in LanGuard with an exclamation mark as needing a restart to complete updates. You restarted the computer already and rescanned it, but the exclamation mark still shows up.
The reason for such an issue is that the follow-up scan performed didn't have a relevant check to clear the exclamation mark. To address this, run a quick uptime scan. If the machine indeed rebooted after the remediation, the flag should be removed.
If this is happening regularly, you may want to create a scheduled uptime scan by following the KB article Creating, Editing, and Configuring a Scheduled Scan.
If the issue persists, contact GFI LanGuard Support.