This is a common issue with autoit scripts.
Duelit connects to the Duelit server, autoupdates, writes files etc., some firewalls/antivirus are giving out false-positives. This has been like that since the beginning.
Unfortunately in order to prevent that, we’d have to send every single Duelit update to every single security company in order to get checked and to prevent false-positives.
This takes days and even weeks and since i am updating Duelit sometimes multiple times a day – impossible.
You have to allow the .exe (in case of autoupdating maybe the whole folder) in your firewall / antivirus.