The file-sharing service FEX.NET announced a temporary limitation of some of its features following the aftermath of a massive attack by Russian forces on Ukraine's critical digital infrastructure on September 23, 2026. The company clarified that the outage is linked to power supply problems at switching nodes, and that full access to all platform features will be restored as soon as the Ministry of Internal Affairs grants permission to restore electricity supply. Preliminary estimates indicate that the service should return to normal operation by the end of the current day, September 24.
Causes of the technical outage and nature of the limitations
FEX.NET representatives explained that the service limitations arose from temporary power supply problems at switching nodes — key network elements responsible for routing traffic between servers and users. Without stable power, these nodes cannot fully process requests, leading to partial unavailability of certain platform features. Importantly, according to the service team's assurances, the situation has had no impact on stored data: all user files remain fully secure and were neither lost nor damaged as a result of the incident.
Context: strikes on data centers on September 23
The FEX.NET outage was a direct consequence of the massive attack carried out by Russian forces on September 23 against Ukrainian data centers. According to available data, the aim of the strikes was to disrupt air-raid alert systems, constituting a deliberate attack on civilian infrastructure. In the words of Foreign Minister Andriy Sybiha, timely warnings about missile and drone threats are of critical importance for the safety of the civilian population, and their disruption puts the lives of tens of thousands of people at risk.
Impact on Kyiv residents and provider operations
The consequences of the strikes on critical digital infrastructure were felt not only by FEX.NET users but also by residents of the capital. A partial loss of internet was recorded in Kyiv, linked to damage to one of the city's data centers. As a result, equipment of providers UTELS and "Pavutyna" was temporarily left without power, leading to degraded connection quality and unavailability of a number of online services for end users. Thus, the strike on infrastructure affected multiple levels at once — from large file-sharing platforms to local internet providers.
Restoration and prevention measures
The FEX.NET team is already working on solutions to help avoid similar outages in the future. First and foremost, this concerns diversifying power sources and providing backup for switching nodes, so that a single point of damage does not lead to partial shutdown of the entire service. Full restoration of functionality is tied to an administrative decision: the service will be able to resume full operation only after the Ministry of Internal Affairs issues permission to restore electricity supply to the damaged facilities. By the end of September 24, the company promises to restore user access to all platform features.
