The new client has problems updating.
The developers have reported a problem with a new customer. It turns out that he has serious problems with the update.
Error – “Could Not Update”
Support Riot Games announced that the developers know about the problem with a new client. It turns out that players receive a message that they cannot update – “Could Not Update” – which makes logging into the game more difficult.
We’re aware of a problem that causes players to see the “Unable to update” warning that prevents them from logging in. We’re working to fix this issue as soon as possible!
Riot also let us know that work is currently underway to quickly repair the troublesome defect.