Log in bug splat??? (client bug, log in bug)

client bugsplats when you click login button.

Not happening to me but a friend. He wouldn't use this medium to resolve it so I'm on here.

Way back you could turn log in animations on and off to fix it. Need a new client fix. Tried all other methods. fresh download, repairs, updated drivers and all related software and reverted one to the recommended version.

send help asap.