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Microsoft said that it is "working vigorously to explore all possible ways" to limit the impact of a global disruption that affected thousands of users of the Outlook and Teams services, at a time when the technology giant continues its efforts to restore its services after communication problems.
The outage, which affected Microsoft 365 services and other applications, including the artificial intelligence assistant Copilot, lasted for more than five hours, after the company announced that its infrastructure was under “increasing pressure.”
As of 00:00 GMT on Friday morning, Microsoft said it was still working on fixing the flaw, noting that some servers “may stop responding again” after connectivity was restored for a short period.
According to the Down Detector website, which specializes in monitoring electronic service malfunctions, the number of reports of problems with the Outlook service reached its peak globally at 138,058 reports, around 18:00 GMT on Thursday evening.
Although the issue was initially reported within the United States, Microsoft said that connectivity issues could affect users "in any region of the world."
The company added in a statement: “We are working vigorously to explore all possible ways to reduce the impact of the disruption.”
She explained that her investigations showed that “the increasing pressure on the infrastructure is not due to an increase in data traffic, but rather to a number of servers stopping working unexpectedly, which led to increased pressure on the remaining infrastructure.”
She added: “Our investigation revealed that one of the core processes on the affected servers is under pressure beyond its capacity to bear, which causes the servers to stop responding and contributes to a decrease in service capacity.”
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Microsoft said, at 23:00 GMT on Thursday evening, that it had begun restarting the affected components and gradually redirecting data traffic to them, to ensure the stability of the infrastructure.
But an hour later, the company posted an update on social media that said: “The servers that we have restored to service may stop responding again once they receive data traffic, and we are analyzing diagnostic data to determine the reasons for this.”
“In parallel, we are imposing temporary restrictions on the types of data traffic that can reach the affected infrastructure in some locations,” she added.
Artificial intelligence companies affected by the disruption
OpenAI said it was investigating an issue with Microsoft connectors that could cause new connections to crash and tools not to work as expected.
For its part, Anthropic announced that it had identified a problem with one of the service providers it relies on, affecting its Microsoft 365 connector.
Last month, Microsoft announced a malfunction in its Azure cloud platform, affecting a group of its programs dedicated to work and productivity, in addition to multiple industrial and service sectors around the world.
In the context of the repercussions of the recent disruption, Workhorse Group, which specializes in the manufacture of electric trucks, announced the postponement of the announcement of its financial results for the third quarter from November 12 to 16, due to disruptions in its business resulting from the global disruption of Microsoft services.
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