By Tim Marcin
Publication Date: 2026-01-22 23:33:00
Updated on Jan. 23 at 9:43 a.m. ET: Microsoft said it had fully resolved the issues that caused a large-scale Microsoft 365 outage on Thursday, rendering a number of users unable to access their email during a workday.
“We’ve confirmed that impact has been resolved,” Microsoft posted on X at around 1:30 a.m. ET on Friday.
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Microsoft blamed the outage on a problem processing traffic in North America, posting Thursday night that it was seeing “continued improvements in service availability and functionality as a result of our load-balancing efforts.” Microsoft 365 customers can also reference the closure communication MO1221364 in their admin dashboard for more details. The communication provides a little more insight, blaming a third-party networking issue for the outage.
Microsoft 365 suffered a major outage on Thursday,…
