Hello Joulinz81

for such things, I would also proceed on the “suspect” computer as you did with the devices: First switch on the computer and do not start any programme or game, after 2-3 days start the first game or frequently used programme and nothing else. If nothing happens again for a few days, start the next game or frequently used programme, and so on.
This procedure requires some patience and discipline, but helps a lot in finding the problem.
You can still do this now when the internet block has been lifted.

Show original language (German)
 changed by GuidoL

Lesen, was auf dem Bildschirm steht.

      Joulinz81

      But this will not reset the system files and if there is something in there it will still be there.

      Show original language (German)

      Installationen, Netzwerk, Internet, Computertechnik, OS Windows, Apple und Linux.

          Hello Joulinz81

          The best method is to create a bootable USB stick with Windows 11 on another computer. Microsoft offers the Mediacreation Tool for this purpose.

          Then boot the PC from this USB, completely erase the hard drive and reinstall Windows. This is the only way to ensure a clean installation.

          Show original language (German)
           changed by TomatoTec

          Gruss TomatoTec

            Hello everyone, I called the hotline and they said it was because you have to select a Swiss server for the game, but most of the time it’s best to select a server in Western Europe…

            Show original language (French)

              Do you use any VPN service on the affected PC, e.g. to simulate a different country of residence?

              If so, which VPN service do you use?

              And if so, be sure to delete and uninstall this VPN service!

              Show original language (German)

              ….keep on rockin' 🤘🏼🤘🏼🤘🏼

                Joulinz81

                With Windows 10/11 you already have pretty good protection as standard with Microsoft Defender Antivirus and MRT. Installing another anti-malware programme usually leads to more problems than it solves.

                Show original language (German)

                Lesen, was auf dem Bildschirm steht.

                    I’ve checked the PC with Windows antivirus and Malwarebyte, and it’s clean. I’ve uninstalled the games and clients and I’m leaving the PC running to see if the blocking happens again.

                    Show original language (French)

                    Hi anjoco

                    That’s what I did in the first place but it was directly blocked again and then it’s no longer possible to deal with the problem in My Swisscom, you have to call the hotline. There are apparently 3 levels of blocking and I was blocked at level 3.

                    Show original language (French)
                    • WalterB has responded to this post.