According to several reports on Reddit and forums, it seems that the issue is server-related, as it affects players on both consoles and PCs.
Players report that they are trying to enter a match, but Warzone's matchmaking system just keeps searching for the game without success.
"It's been like this for the last 3 hours, it just keeps searching without finding a lobby, idk what's wrong. The connection is good. I'm on Xbox one btw," says Reddit user ll-EXODiA.
It seems that the issue is currently mostly occurring on EU servers, as players confirming the issue are mentioning that they all play on EU servers.
Apparently, currently only Plunder mode, while normal matches and lobbies are failing to connect and place players in a match.
Raven Software has confirmed that they are aware of the issue and are investigating.
❗ We are investigating an issue in #Warzone where players are unable to join matches.— Raven Software (@RavenSoftware) June 4, 2021
We will provide more updates as soon as they are available!
At the time of writing, it seems that the problem is still plaguing Warzone players on EU servers, as the problem is still being investigated.
We will update the article with more details as soon as they become available.