Launcher problem

[Minq]

I've been playing plutonium for a while without having problem and a friend of mine wanted to start playing but he have a problem.
He tried to instal the launcher but he can't run it and thoses messages show up :
He tried already so many things from the support but no one make it runs, do someone have any idea ?

[Resxt]

This is most likely a DNS or VPN or antivirus issue.
In the end it's an internet issue on his side.
If you want help you nees to give info on all this topic: any VPN installed, any DNS changed, what antivirus etc

Also do the methods listed here one by one and carefully. I doubt that using a VPN for example would not work.
https://plutonium.pw/docs/update/#fixing-failed-to-check-for-updates