On Saturday, Microsoft announced that services across Teams, Outlook, and its other offerings had been fully restored, concluding a worldwide outage that disrupted online communications for businesses and government entities for over a day.
“We have finalized our work to resolve the root cause of the issue and have restored services to all remaining affected customers and regions,” the company stated on X.
According to Microsoft, server malfunctions were responsible for the disruption that also impacted its Copilot AI assistant, and the company confirmed that there was no evidence of malicious activity, dismissing AI as the cause.
Outlook and Teams are among the most utilized applications in workplaces, boasting hundreds of millions of users. The outage hindered individuals from executing key tasks such as sending emails, managing calendars, and conducting virtual meetings.
Microsoft expressed being ‘deeply sorry’ for the extended outage affecting businesses and government agencies worldwide. The tech giant indicated that the issue stemmed from a ‘technical problem’ that has largely been resolved.
The outage impacted government bodies from Australia and Japan to the United States, causing delays at trading firms, obstructing some companies from reporting earnings, and prompting airlines to alert passengers about communication delays, as stated in public announcements.
Organizations that run Microsoft services on their own servers instead of in the cloud experienced less disruption.
Another outage for Microsoft
Reports of the outage began to increase on Thursday, marking one of the longest disruptions in Microsoft’s history and the second such incident this year.
Microsoft indicated that the outage primarily affected features associated with Exchange Online — its cloud-based email and scheduling service — while leaving other applications functional.
This incident raises concerns about the global dependency on a small number of Big Tech companies that provide both essential software and the cloud infrastructure that supports it.
The situation also underscores the reliance on Microsoft’s workplace solutions, with reports of outages surging as employees started their workdays in Asia and Europe, according to data from Downdetector’s parent company, Ookla.
Downdetector recorded over 7.4 million outage reports globally, with peaks reaching nearly 20,000 per minute, significantly exceeding normal levels by more than 1,500 times.
“This illustrates how much of the workday now depends on a single provider’s email and collaboration tools,” remarked Luke Kehoe, lead industry analyst at Ookla.
Microsoft’s shares ended the trading day at $523.88 on Friday, remaining stable. The stock has increased approximately eight percent this year.
The disruptions and financial repercussions from the outage may lead to various insurance claims; however, the overall impact on insurers is anticipated to be limited, according to Mario De Cicco, vice-president of European financial institutions at Morningstar DBRS.
De Cicco projected the global insured losses due to the outage to be between $300 million and $500 million, significantly lower than the $400 million to $1.5 billion financial impact from the 2024 CrowdStrike outage, which disrupted over eight million Windows-based computers.
Earlier this year in January and in October of the previous year, Microsoft also experienced outages with its 365 services. Last month, a disruption to its Azure cloud platform affected its productivity software and various industries globally.
“The larger concern is that this isn’t the first Microsoft 365 outage we’ve seen this year,” stated Josh Gilbert, a market analyst at trading platform eToro.
“If reliability becomes a recurring issue, it gives every IT department a reason to reconsider placing even more of their operations with a single provider.”
Nevertheless, some analysts have questioned whether incidents like this can drive customers to competitors, given the substantial switching costs of replacing tools that are deeply integrated into daily workflows.