Tens of thousands of Microsoft Outlook and Microsoft 365 users were reporting outages on Thursday, Jan. 22, as the company said it was working to fix an issue with the “service infrastructure in North America.”
The issues began in the afternoon on the East Coast, according to Downdetector, a website that tracks user-reported problems with tech services.
As a result, Microsoft said, “Users may be seeing degraded service functionality or be unable to access multiple Microsoft 365 services.”
And people using Outlook for email “may be receiving a ‘451 4.3.2 temporary server issue’ error message when attempting to send or receive [messages],” the company said.
Microsoft blamed a “portion of dependent service infrastructure in the North America region” that wasn’t “processing traffic as expected.”
And while the company said in an update later on Thursday that they had “restored the affected infrastructure to a heathy state, further load balancing is required to mitigate persistent impact.”
“We’ve identified and are implementing additional actions to direct requests and traffic to additional healthy sections of infrastructure to achieve withstanding recovery,” the company said in its update.
Both Microsoft 365 and Outlook, which encompass a variety of workplace and business tools, including email, are used by hundreds of millions of people and numerous companies.
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