An airport staff holds up a final call sign at Hong Kong International Airport on July 19, 2024, as some airlines resort to manual check-in due to a world wide Microsoft outage. (Photo by ISAAC LAWRENCE / AFP) (Photo by ISAAC LAWRENCE/AFP via Getty Images)

A passenger (C) sleeps while waiting to be checked-in at Hong Kong International Airport on July 19, 2024, as some airlines resort to manual check-in due to a world wide Microsoft outage. (Photo by ISAAC LAWRENCE / AFP) (Photo by ISAAC LAWRENCE/AFP via Getty Images)

Airport staff manually check-in passengers at Hong Kong International Airport on July 19, 2024, due to a world wide Microsoft outage. (Photo by ISAAC LAWRENCE / AFP) (Photo by ISAAC LAWRENCE/AFP via Getty Images)

Passengers wait to be checked-in at Hong Kong International Airport on July 19, 2024, as some airlines resort to manual check-in due to a world wide Microsoft outage. (Photo by ISAAC LAWRENCE / AFP) (Photo by ISAAC LAWRENCE/AFP via Getty Images)

Airport staff manually check-in passengers at Hong Kong International Airport on July 19, 2024, due to a world wide Microsoft outage. (Photo by ISAAC LAWRENCE / AFP) (Photo by ISAAC LAWRENCE/AFP via Getty Images)

Passengers wait to be checked-in at Hong Kong International Airport on July 19, 2024, as some airlines resort to manual check-in due to a world wide Microsoft outage. (Photo by ISAAC LAWRENCE / AFP) (Photo by ISAAC LAWRENCE/AFP via Getty Images)

Passengers wait to be checked-in at Hong Kong International Airport on July 19, 2024, as some airlines resort to manual check-in due to a world wide Microsoft outage. (Photo by ISAAC LAWRENCE / AFP) (Photo by ISAAC LAWRENCE/AFP via Getty Images)

Airport staff hand out water at Hong Kong International Airport on July 19, 2024, as some airlines resort to manual check-in due to a world wide Microsoft outage. (Photo by ISAAC LAWRENCE / AFP) (Photo by ISAAC LAWRENCE/AFP via Getty Images)