Error code

Riot VAL 5

RIOTVAL 5
Game/Platform Error· An error code shown by a game or gaming platform/launcher.

What it means

Your account was logged in elsewhere.

How to fix it

  1. Log out of all devices.
  2. close other Riot Client instances.
  3. restart the Riot Client.
  4. log back in.

Not affiliated with Riot. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.