Microsoft outage drags into second day as Australian costs near billions

Microsoft’s worldwide disruption to Outlook, Teams and other Microsoft 365 services carried into a second day on Friday, with the company saying its attempts to restore capacity were not producing the results it expected. The outage began shortly before 1 p.m. ET on Thursday, according to CNBC, and email tools stayed down through much of the Asian business day and into early European hours. The Guardian, reporting from Australia, said the failure hit schools, courts, hospital administration and government agencies across the country.

Key facts

• Microsoft said a change it applied to improve serviceability was “not taking as expected” and that it was identifying alternate workstreams to add capacity.
• Ashwin Pal of risk advisory firm RSM Australia said the cost to Australia would run into billions of dollars, counting indirect as well as direct losses.
• Microsoft executive Charles Lamanna confirmed there was no indication the outage resulted from malicious or cyber activity.
• Indian carriers IndiGo and Akasa Air reported their email support services were affected, while OpenAI and Anthropic said they had issues with Microsoft connectors, per The Guardian.
• CNBC reported that Richemont’s earnings were slightly delayed and that Workhorse Group pushed its third-quarter results from Nov. 12 to Nov. 16 because of the disruption.

What Microsoft says went wrong

The company traced the failure to a process on affected servers that establishes secure connections becoming overwhelmed, which left those machines unable to handle requests. CNBC reported that Microsoft initially attributed the trouble to elevated load across multiple regions, then determined the load came from a number of servers becoming unexpectedly unavailable and straining the rest. Microsoft said it was rolling back a configuration change that correlated with the onset of the outage and was restarting servers in stages.

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In its update just before 7 a.m. in London, Microsoft said users might still be unable to reach Outlook on web or desktop and gave no timeline for full restoration. It said reviews of servers and regional activity after infrastructure reboots had produced what CNBC described as marginal success, and that it was adding virtual machine capacity and preparing automated recovery systems to detect and restart unresponsive servers.

How far the disruption reached

The Guardian reported that Taiwan’s Downdetector logged more than a hundred service reports between 3am and 9am on Friday, with office workers unable to send email and others reporting problems with Teams calendar and scheduling. Fund management at Taiwanese securities firms, life insurers and investment trust companies was disrupted, and one company cancelled a bond repurchase transaction it had already scheduled, a source told Reuters.

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Australia’s Department of Foreign Affairs and Trade directed urgent sanctions enquiries to the Australian Sanctions Office by telephone, and the Department of Agriculture, Fisheries and Forestry said clients might be unable to exchange email with its systems. The Australian Medical Association said some hospitals returned to paper scripts because prescribing software authentication requires multifactor verification through Microsoft-supported email, though it reported no impact on patient care. The Australian Computer Society renewed calls for a review of which critical systems depend on a single provider.

The two reports differ in emphasis rather than substance: CNBC focused on Microsoft’s engineering updates and corporate earnings delays, while The Guardian documented the fallout across Australian public services and the political response. CNBC also noted that Amazon Web Services and Google users reported outages on the same tracker on Thursday, and that Amazon said its services were operating normally and that unrelated disruption elsewhere was prompting inaccurate reports.

Why it matters

Email is the authentication layer for a great deal of routine administration, so a failure in Microsoft’s mail infrastructure stalls work well beyond the inbox. Australia’s experience shows the exposure plainly: agencies could not answer media queries, small firms lost a morning of trade, and the assistant treasurer, Daniel Mulino, said he could not quantify the economic impact. Market analyst Josh Gilbert of eToro told The Guardian that investors would look past this episode for now, but warned that repeated 365 outages this year give IT departments a reason to reconsider consolidating more business with one provider.

What to watch

Microsoft has said it will publish a full report once the incident is mitigated, which will set out the root cause and the scope of the network change involved. Workhorse Group’s rescheduled Nov. 16 earnings release will be the first scheduled corporate event to test whether business operations have returned to normal.

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Sources: The Guardian, CNBC