How the Microsoft outage has been felt worldwide

At least 74 countries have been affected by the Microsoft outage since it was detected after midday US Eastern Time (17:00 GMT) on Thursday.

Microsoft 365 Services, including Teams, Outlook and artificial intelligence software Copilot, are experiencing "connectivity problems", the company said.

From city governments in the US to Australian spy agencies, disruption has been widespread. Here's what's been happening around the world.

US tech giants OpenAI and Anthropic have both reported problems.

OpenAI, which makes ChatGPT, said it was investigating an issue affecting its connections to Microsoft's services, which caused some tools not to work as expected.

Electric truck maker Workhorse Group, which was expected to report third-quarter results on 12 November, rescheduled to 16 November, citing business disruptions caused by the outage.

Meanwhile, officials in some US cities encouraged citizens to call local offices and agencies where needed instead of using email.

The City of Austin in Texas posted on X early on Friday: "Due to an ongoing Microsoft Outlook outage, City of Austin employees cannot receive or send emails at this time.

"City phone lines remain operational, and 911 Emergency services are not impacted."

Courts from Los Angeles to Texas also issued statements warning that communications might be delayed.

In Canada, the public broadcaster CBC reported that a healthcare network running several hospitals in Toronto had declared a code grey, indicating an infrastructure failure.

The company, Unity Health Toronto, said its teams were having trouble sending or receiving email but that patient care was not affected.

The government of Japan said its shared IT platform had been disrupted.

"We understand that Microsoft is working to restore services, and we will continue to monitor the company's response," Deputy Chief Cabinet Secretary Masanao Ozaki told reporters.

In India, the outage was disrupting work for many on Friday, with emails not landing and Teams calls not going through smoothly.

People working in the equity markets told BBC News they had panicked when they realised they could not access daily research reports before their morning meeting where they make their big decisions of the day.

"Outlook wasn't working. We fortunately have an alternative so it was not a problem. But we conduct most of our calls, especially with big clients, on Teams - that has been a challenge," a senior executive with a big Indian brokerage said on condition of anonymity.

Singapore confirmed the outage had affected some government systems, but said "emergency services remain fully operational".

"The email disruption may delay responses to enquiries," Singapore's Government Technology Agency told local media.

It urged people to check social media channels or the relevant official website.

Singapore's courts also said they were "experiencing issues with incoming and outgoing emails", urging people to contact them by telephone for urgent matters.

In the Philippines, the Supreme Court warned that "responses to emails and other transactions may be delayed".

Firms in China use software that has been made locally - WPS Office is a favourite - but the Microsoft outage caused frustration there too.

Outlook is one of the few reliable channels for many offices and businesses in the country who work with colleagues across the world.

China operates one of the world's most sophisticated systems of internet censorship, known as the Great Firewall, which restricts access to many Western websites including Google, Facebook and Instagram along with many international news organisations including the BBC.