I suggest you also use Revo Uninstall to check for Avast and BitDefender - not that a firewall can cause this issue.
Assuming that doesn't help, now make a second user in Windows here, log into Windows and try the game under that.
If that too doesn't help I'm pretty much out of ammo here I'm afraid. I don't often suggest this but how do you feel about a Windows Reset?
Assuming that doesn't help, now make a second user in Windows here, log into Windows and try the game under that.
If that too doesn't help I'm pretty much out of ammo here I'm afraid. I don't often suggest this but how do you feel about a Windows Reset?