Global Blue Screen

On July 19, there was a major outage in Microsoft services all over the world. Access problems were experienced all over the world to Microsoft’s cloud services. This outage caused disruptions in many sectors, especially transportation, banking, telecommunications and media. Users reported that there were also outages in the Microsoft 365 service.

After the blue screens started to appear on screens in public areas, the outage started to have a much bigger impact. Before the conspiracy theories could grow any further, it was announced from the Microsoft front that the outages were due to an update released by CrowdStrike, a company that provides cybersecurity support to Microsoft.

Previously: CrowdStrike had experienced a similar problem with an update in 2023 and then withdrew this update.

Outages

Many airlines worldwide, including Turkish Airlines, Ryan Air, United Airlines, American Airlines, Lufthansa, Delta Airlines, Allegiant Air, Frontier Airlines, Sun Country Airlines, Virgin Australia and Qantas, have canceled approximately 1,400 flights.

The outage, which also affected telecommunications services, also caused service outages at Vodafone, Telstra and Virgin Media.

On the other hand, there were outages in many healthcare institutions as well as the “911” emergency service in the US.

In addition, global technology companies such as Amazon and Visa also experienced difficulties during the process.

Its Bill to Turkey

This global crisis, which affected the entire world, also affected many companies in Turkey. Turkish Airlines, Denizbank, Garanti BBVA, HSBC, Trendyol, Ziraat Bankası, Central Bank of the Republic of Turkey (TCMB), Sahibinden and Türk Telekom were also affected by the outages.

Turkish Airlines cancelled 84 flights during the disruptions. In a statement made by THY, it was announced that passengers who meet the conditions will be provided with free reservation changes or uninterrupted refund rights between July 19-25.


Oktay Evin

Chief Technology Officer