It crashed seconds before you start, so before game guard etc.
Only first client working than its over.
idk what security system u use, so i will explain it just for windows defender.
*make sure, that previous used security software was uninstalled correctly!
*make sure, that the following settings can be used on every security software.
Windows 10:
clean ur Justac folder.
Go to Start > Settings > Update & Security
> Windows Security > Virus & threat protection.
select "virus & threat protection"
select virus protection settings
select "real-time protection" and DISABLE it.
extract ur game to Justac folder.
switch back to virus protection settings.
scroll down and select "Exclusions"
add there the:
Alefclient.exe
aukbhook.dll
JustArchlord.exe
and your Justac folder
Save it.
go back and ENABLE "real-time protection" again