"Airlines experiencing difficulty checking-in travellers for international services due to outage of Advanced Passenger Processing system," the Melbourne airport operator said on its Twitter account.
The Sydney airport operator, which also issued a similar message on Twitter, said that the service has now resumed as normal.
The Australian Department of Immigration and Border Protection said in a statement it was "aware of an external system outage with the Society International Telecommunications Aeronautiques (SITA) system".
The problems were caused by crashes in the Passenger Service System program, a mandatory process in Australia for international airlines, which has forced several airlines to check-in passengers manually.
Officials believe that failures have occurred in the globally used passport control system, meaning passports could not be read electronically thus slowing down the check-in process.
In New Zealand, Auckland and Wellington airports experienced similar problems due to failures in the national system used by the country's Immigration Ministry, according to the New Zealand Herald newspaper.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
About VDC
Doraiah Chowdary Vundavally is a Software engineer at VTech . He is the news editor of SocialNews.XYZ and Freelance writer-contributes Telugu and English Columns on Films, Politics, and Gossips. He is the primary contributor for South Cinema Section of SocialNews.XYZ. His mission is to help to develop SocialNews.XYZ into a News website that has no bias or judgement towards any.