(CNN)English Premier League side Chelsea has been banned by world governing body FIFA from signing players for the next two transfer windows.
The sanction comes after the club was found to have breached FIFA regulations on the international transfer and registration of players under the age of 18.
The punishment applies to the registration of new players on both a national and international level, meaning that Chelsea, owned by Russian billionaire Roman Abramovich, will be unable to strengthen their squad until June 2020.
FIFA's Disciplinary Committee found the club guilty of 29 breaches of Article 19, which relates to violations regarding the registration of minors at the London outfit's academy.
The statement from FIFA also declared that Chelsea "committed several other infringements relating to registration requirements for players."
It added that the club had "breached article 18bis of the Regulations in connection with two agreements it concluded concerning minors and which allowed it to influence other clubs in transfer-related matters."
Chelsea's women's and futsal teams are not covered by the ban, while it also does not affect the release of players from their contracts. When the next registration period opens, Chelsea will also be able to bring back players away from the club on loan.
The Stamford Bridge club currently has 41 players away from Chelsea on loan deals.
The club has also been fined $599,535 and has been given 90 days to regularize the situation of the minor players concerned.
Chelsea retain the right to appeal the sanctions, both to FIFA and to the Court of Arbitration for Sport (CAS).