A lot of Call of Duty players have been reporting issues with the game servers. According to the complains reported, players are unable to connect and access online servers of Call of Duty Warzone and Modern Warfare MP.
A quick look at Twitter also suggests that issue is widespread and affecting a lot of COD players. Fret not, you are not alone.
There is no official update about the server issue yet. Comment down below if you are having issues with COD servers.
[Update]
Activision just posted an update on the official Twitter handle addressing the server issue.
According to the official statement, the concerned team is investigating the server issues.