Call Of Duty 4 Modern Warfare Update 21.1 _verified_ Jun 2026

The primary driver for the 21.1 update was a necessary fix for the . Due to a loss of the original domain used for automated distribution, clients running version 21.0 or older could no longer transition automatically to newer builds.

: Updates connection parameters to read the new CoD4x Master Server Index, making it easy to discover Promod, tactical realism, and vanilla game lobbies. call of duty 4 modern warfare update 21.1