In an attempt to fix the issues plaguing Watch Dogs' online gamepay, Ubisoft is performing maintenance on their servers. According to their update on Twitter, this maintenance will affect multiplayer matchmaking on PS3, PS4, and PC.
The maintenance begins at 11:30am EST and is expected to last for about 30 minutes. We'll update you when Ubisoft updates us on the status. Until then, it looks like its single player only for Watch Dogs.
We'll be performing maintenance on our servers that will affect multiplayer matchmaking on PS3, PS4 and PC. (1/2)
— Watch Dogs (@watchdogsgame) May 29, 2014
Though Watch Dogs has received fairly positive reviews since its launch this week, the game's multiplayer functionality has been hindered by server issues. It's annoying, but the game is still pretty darn fun. Hopefully this update fixes the problems.