Microsoft outage disrupts UK hospitals and schools, raising resilience questions

A major outage of Microsoft services on Friday 13 November stopped email and video calls for millions of users worldwide. Microsoft said it was working to fix "connectivity problems". The disruption hit public services including hospitals and schools.

The cause had not been established when the analysis was written. It comes after UK government warnings to prepare for a possible cyber-attack, and an academic commentator argues that the fragile design of internet infrastructure may be the bigger threat.

A.R.E. Taylor, an anthropologist who does fieldwork in the data centre industry, says the incident highlights the risks of a small number of powerful corporations running most of the digital services people rely on. Cloud computing has accelerated that centralisation, he argues, by placing computing resources in the hands of a few major firms.

He points to earlier disruption. In July 2024, a faulty security update crashed millions of Windows systems, leaving pharmacies, airports and banks unable to operate. On 22 October, AI testing exposed security vulnerabilities in a programme underpinning roughly 70% of the world's websites, and governments and businesses took thousands of sites and services offline as a precaution.

Taylor stresses that the internet relies on extensive physical infrastructure and on people to run it, often under tight deadlines and pressure to keep services uninterrupted. Where organisations are understaffed or place excessive demands on staff, he says, the capacity for thorough testing, monitoring and diagnostics may suffer.

The job of restoring services will fall heavily on IT professionals in affected organisations, many of whom will need to work long hours. He says the physical and psychological toll on these workers is part of the wider cost of major failures.

Organisations, public services and even nation states that outsource essential digital operations to one provider can be left unable to function when it fails, Taylor argues. He says this raises fundamental questions about digital resilience, and warns that the consequences of future failures could be more extensive and more damaging as reliance on online services grows.

For manufacturers and engineering firms that depend on cloud-based email, communications and business systems, the episode is a reminder to consider how operations would continue if a single supplier went offline.