When does the MW4 beta end? Activision’s official Modern Warfare 4 event information set the open beta cutoff at 10 a.m. Pacific Time on Tuesday, September 1. The open weekend began on August 28 across the listed platforms.

That schedule applied to the open beta, not the earlier early-access period. Activision’s post separates the two windows, which is useful for players trying to understand why access changed during the month.

The open beta was described as available to all players, with no preorder or beta code required for that window. The official instructions also listed PlayStation 5, Xbox Series X|S, PC storefronts and Nintendo Switch 2 among the supported platforms.

Activision’s preview information says the test included new and returning multiplayer modes, a range of weapons and larger battles. Players used the beta to sample the systems before the full game’s planned October 23 launch.

PC Gamer independently reported the same September 1 cutoff and explained the start and end times for both beta weekends. That agreement makes the date more reliable than countdown posts that do not identify a source.

Because the cutoff has passed, players should look for official post-beta news rather than trying to extend access through unofficial downloads. Activision may share changes after feedback, but a later test window needs a new announcement.

The end of a beta is also a reminder to save feedback while it is fresh. Players can report problems through official channels, but they should not expect an expired test build to remain available.

The phrase when does MW4 beta end now has a clear answer for the open test. Players looking for a new download or an extended timer should be cautious, because unofficial pages may recycle an earlier schedule. The final game and any future test will have their own official instructions.