Microsoft Outage Disrupts NHS, Metropolitan Police, Schools and Parliament in London 2026

Key Points

• A global Microsoft 365 outage began on Thursday evening, 12 November 2026, disrupting Outlook, Microsoft Teams, Copilot AI, SharePoint, OneDrive, and cloud systems across 74 countries, including the United Kingdom.
• In London, the disruption has affected the Metropolitan Police, London Fire Brigade, NHS trusts, schools, local councils, and Parliament.
• Both the Metropolitan Police and the London Fire Brigade confirmed service disruption, though emergency responses and operational mobilisation remain unaffected.
• The Central and North West London NHS Foundation Trust (CNWL) advised patients to telephone services rather than send emails, while NHS Grampian in Scotland and Northern Care Alliance NHS Foundation Trust also reported email and GP system disruptions.
• The GMB union warned that ambulance service staff handling 111 and 999 calls across the UK have been unable to refer patient details through normal channels, creating a backlog.
• Microsoft stated that recovery efforts are showing “incremental improvement” and “early signs of stabilization”, though overnight server restarts failed and services remain unstable with no timeframe for full resolution.
• Microsoft Executive Vice-President Charles Lamanna confirmed there is no indication the outage was caused by a cyber-attack.
• AI expert Andrew Gill described the incident as a “real red letter day”, warning of the risks posed by heavy reliance on Microsoft’s systems.

London, UK (North London News) November 13, 2026 – A global Microsoft outage has disrupted essential public services across London and the wider United Kingdom since Thursday evening, affecting the Metropolitan Police, the London Fire Brigade, NHS trusts, schools, local councils, and Parliament. Users across 74 countries have been unable to access core workplace tools including Microsoft Outlook, Microsoft Teams, and the Copilot artificial intelligence service, alongside SharePoint Online, OneDrive, and cloud infrastructure. While emergency call-outs and operational mobilisation continue without interruption, health authorities and trade unions have warned of communication backlogs and advised the public to use telephone lines rather than email.

How has the Microsoft outage affected London emergency services and Parliament?

Outage monitoring platform Downdetector first recorded a sharp spike in British users reporting problems with Microsoft Teams at approximately 6:15 pm GMT on Thursday, 12 November 2026. Across London, the technical failure swiftly impacted administrative and communication networks within the Metropolitan Police, the London Fire Brigade, local councils, state schools, and the UK Parliament.

Both the Metropolitan Police and the London Fire Brigade confirmed they were experiencing technical disruption to their internal and external digital communications. However, both emergency services stated that emergency responses and operational mobilisation remained unaffected. Elsewhere in the UK, regional forces faced similar barriers; as reported by LADbible, South Wales Police issued a public statement noting:

“We’re aware of global issues affecting Microsoft Outlook this evening, which have impacted our ability to receive online reports via the website as well as our general contact centre email address. Until these issues are resolved, if you need to make a non-urgent report, please call us on 101 or send a direct message to this Facebook account. In an emergency, always dial 999.”

What has been the impact on NHS hospitals and ambulance services?

Health services across London and the rest of Britain have experienced widespread administrative disruption due to the failure of Outlook and Teams, which underpin routine clinical coordination and remote consultations. As reported by The Guardian, NHS England operates under a major five-year agreement to utilise Microsoft 365 across its network.

In the capital, the Central and North West London NHS Foundation Trust (CNWL) issued an urgent notice warning patients not to rely on electronic mail. In its public statement, the Central and North West London NHS Foundation Trust stated:

“Patients: please call your usual CNWL service rather than emailing until further notice. Emails may not be received. We apologise for any inconvenience.”

Beyond London, health boards across England and Scotland reported parallel operational hurdles:

• Ambulance Services: The GMB union warned that the outage had affected ambulance services across the UK. As reported by LADbible, a GMB union representative stated: “The Microsoft data outage is having a serious impact across ambulance and NHS trusts. Those who work in 111 and 999 services are unable to refer patient details in the normal way which is creating a massive backlog and has the potential for chaos. Luckily emergency and life threatening call outs appear to be unaffected.”
• NHS Grampian: As reported by The Guardian, the Scottish regional health board NHS Grampian stated: “NHS Grampian is experiencing issues due to the Outlook outage, affecting some GP practices’ access to Hosted Vision systems. Telephone lines and other systems are operational. We apologise for any inconvenience and hope Microsoft resolves the issue soon.”
• Northern Care Alliance NHS Foundation Trust: As reported by BBC and Nacionale, the trust—which operates hospitals in Salford, Oldham, Rochdale, and Bury—confirmed its email systems were disrupted, though patients were advised to attend scheduled appointments unless contacted directly.

What has Microsoft said about the cause and recovery efforts?

Microsoft confirmed that its recovery efforts were delivering “incremental improvement”, but acknowledged that services remained unstable after overnight attempts to restore servers failed, with several machines crashing again shortly after being brought back online. The technology company stated that engineers were isolating affected segments of its infrastructure and redirecting network traffic to alternative routes, though it has not provided a timeframe for a full resolution.

In a series of technical updates shared via its Microsoft 365 Status account on X and under admin centre advisories EX1550543 and MO1550821, Microsoft explained that a number of servers had become “unexpectedly unavailable” after an automated process responsible for establishing secure connections became overwhelmed, causing servers to fail automated health checks.

As reported by Tom’s Guide by journalist Dave LeClair, Microsoft stated in an operational update:

“Recovery efforts are ongoing across impacted infrastructure. We are seeing early signs of stabilization, but service capacity has not yet returned to normal levels and health remains variable as traffic is carefully reintroduced.”

To prevent inbound communications from being lost during the disruption, Microsoft also announced it was extending the email timeout window to 48 hours to protect delayed messages while recovery continues.

Was the Microsoft outage caused by a cyber-attack?

Amid online speculation regarding hostile interference or malfunctioning artificial intelligence models, senior leadership at Microsoft rejected suggestions of a cyber-attack. As reported by WalesOnline and The Times of India, Microsoft Executive Vice-President Charles Lamanna stated that the outages did not appear to be the result of malicious or cyber activity, adding that the company “regrets” the disruption and will publish a full post-incident report detailing the root cause once full mitigation is achieved.

What have technology experts said about reliance on Microsoft?

The scale of the disruption across emergency services, healthcare providers, and government institutions has prompted renewed scrutiny over single-vendor dependency in critical national infrastructure. Artificial intelligence expert Andrew Gill described the outage as a “real red letter day”, warning that businesses and public services had become heavily reliant on Microsoft’s systems.

Similarly, as reported by Tom’s Guide by journalist Dave LeClair, industry commentary highlighted the operational risks of centralised cloud architecture, warning:

“This should be a wake-up call for every organisation. Businesses need to ensure they can continue operating when critical technology becomes unavailable, without relying entirely on a single system or provider.”

Background of the Microsoft 365 Infrastructure Outage

The disruption began on Thursday, 12 November 2026, initially manifesting as connectivity errors for Exchange Online mailbox users in the Americas around 1:00 pm Eastern Time (6:00 pm GMT) before cascading globally across Europe and Asia. Downdetector logged more than 130,000 problem reports globally for Outlook alone at the peak of the incident. Because modern Microsoft 365 applications—including Teams, SharePoint, OneDrive, and Copilot—rely on shared Exchange Online and authentication backbones, the server capacity loss degraded multiple services simultaneously. Over 430 million people worldwide use Microsoft 365 applications, including major British public institutions such as NHS England, police forces, local authorities, and UK Parliament. The incident occurred more than two years after the July 2024 global Windows IT outage caused by a faulty third-party CrowdStrike security update, though technical analysts at CyPro noted that the November 2026 failure stemmed from internal Microsoft cloud infrastructure rather than external endpoint software.

Prediction: How This Development Can Affect UK Public Services and Enterprise Users

For UK public sector bodies—including NHS trusts, emergency call centres, schools, and local councils—as well as private enterprises, this prolonged outage is expected to prompt immediate reviews of business continuity and disaster recovery protocols. Organisations that rely exclusively on Microsoft Exchange Online and Teams for inter-agency referrals, such as 111 and 999 ambulance triage workflows, face heightened pressure to establish independent, out-of-band backup communication channels that operate on separate cloud infrastructure. In the short term, administrative teams across hospitals, GP surgeries, and municipal offices will likely experience secondary operational bottlenecks as they process delayed correspondence once the 48-hour email queue clears. Over the medium to long term, procurement officers and chief information security officers across British institutions may re-evaluate single-vendor lock-in, incorporating multi-cloud redundancy and offline failover procedures into public sector IT contracts.