Yandex restores main Yandex 360 functions after drone attacks on its data centres
In short
Yandex said on 20 October that the main features of Mail, Disk, Docs, Calendar, Tracker and Telemost in its Yandex 360 office service work again. Some functions, including viewing older emails and drafts, are still unavailable, and engineers are continuing recovery work.
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Yandex said on 20 October that it had restored the main functionality of its Yandex 360 office service, which had been limited after a drone attack on a data centre, Interfax reported. The company said Yandex 360 continues to restore full functionality. It said the main features of Mail, Disk, Docs, Calendar, Tracker and Telemost work, and the other functions are gradually returning. [ 1 , 3 , 5 ]
Vedomosti, citing the Yandex 360 team, reported that users can again send emails with attachments, preview documents and use cloud recording of video meetings. The limit on sending messages larger than 1 MB in Mail has been lifted. File preview also works in Disk and Telemost. Calendar is fully restored in the web version and the mobile app. Users of Docs can edit files online and offline through the desktop app, which will remain free until the end of 2026. In Disk, download and sync errors were fixed in versions 3.0 and 4.0. Interfax added that notifications and integration with Mail have been restored in Tracker. [ 2 , 5 ]
Some functions are still down. Access to part of the files is limited. The company said more files are available and their number is growing every day, but some may still not open or download. Yandex told Interfax that viewing some older emails (from six months back), creating drafts and delayed sending are still unavailable. AI meeting summaries and meeting analytics in Telemost, part of the additional chat functions and a number of features in other services also do not work. Engineers are continuing recovery work. [ 2 , 5 ]
Interfax reported that drone attacks between 8 and 11 October hit three Yandex data centres, in Sasovo in the Ryazan region, Kaluga and Vladimir. Operations at the Sasovo and Vladimir centres were fully stopped, and several modules at the Kaluga centre were put out of action. According to Vedomosti, Yandex 360 reported temporary failures in Mail on 8 October, the day a fire broke out at the Sasovo data centre after a drone attack. On 9 October Yandex reported damage to the infrastructure of the Kaluga data centre, which also disrupted services. [ 2 , 5 ]
On 13 October Yandex B2B Tech announced that existing customers would not be charged for Yandex Cloud and Yandex 360 because of the failures, Vedomosti reported. The company said then that some functions had been deliberately limited to keep the main services running. Interfax said that earlier on Tuesday Yandex had reported restoring access to key features of another service, Direct. According to Yandex's first-half 2026 financial reporting, cited by Interfax, Yandex 360 had 117 million monthly users, paid and free, and revenue of 11.6 billion roubles. [ 2 , 5 ]
Why it matters
Yandex 360 had a monthly audience of 117 million users in the first half of 2026, according to Interfax citing the company's financial reporting. The documents show the service is only partly restored, with some files and functions still not working.
Key facts
- Yandex said the main features of Mail, Disk, Docs, Calendar, Tracker and Telemost in Yandex 360 are working, and the remaining functions are returning gradually. [ 1 , 5 ]
- Sending emails with attachments larger than 1 MB works again, and Telemost has cloud recording of meetings again. [ 2 , 5 ]
- Calendar is fully restored in the web version and the mobile app, Vedomosti reported, citing the Yandex 360 team. [ 2 ]
- Interfax said Yandex 360 functionality had been limited after a drone attack on a data centre. [ 5 ]
- Interfax reported that between 8 and 11 October drone attacks hit three Yandex data centres, in Sasovo (Ryazan region), Kaluga and Vladimir. [ 5 ]
- Access to some files in Disk remains limited; the company said some may still not open or download. [ 2 ]
Confirmed by several sources
- Yandex said the main features of Mail, Disk, Docs, Calendar, Tracker and Telemost are working again. [ 1 , 5 ]
- Sending emails with attachments over 1 MB has been restored. [ 2 , 5 ]
- Cloud recording of meetings in Telemost has been restored. [ 2 , 5 ]
- Not all functions are back: the company said recovery work continues. [ 2 , 3 , 5 ]
Still unclear
- When full functionality of Yandex 360 will return. The company said it is continuing to restore full functionality but gave no date in the documents.
- How many files in Disk remain inaccessible. The company said more files are available every day but some may still not open or download; no figure is given.
- The full extent of the damage to the data centres. The Interfax text is cut off after its description of the three affected data centres.
What local media are saying
Timeline, local time
- TASS published that part of the Yandex 360 functions had been restored. [ 1 ]
- Vedomosti reported that Yandex had partially restored Mail, Disk, Telemost and other services. [ 2 ]
- Habr News published the Yandex statement that it continues to restore full Yandex 360 functionality. [ 3 ]
- RBC reported that Yandex had restored part of the previously unavailable functions of Disk, citing the Yandex 360 press service. [ 4 ]
- Interfax reported that Yandex had restored the main functionality of Yandex 360. [ 5 ]