Plans to expand the 2022 World Cup to 48 teams have been abandoned by Fifa.
Fifa president Gianni Infantino said last year the expansion from 32 teams could be brought forward from 2026 to the 2022 tournament in Qatar.
The change would have required Qatar to share hosting duties with other countries in the region.
World football's governing body said after a "thorough and comprehensive consultation process" the change "could not be made now".
Fifa also said it explored the possibility of Qatar hosting a 48-team tournament on its own but has decided not to pursue those plans as there was not enough time "for a detailed assessment of the potential logistical impact".