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Why did Microsoft 365 go down? Company provides key update with Outlook, Microsoft Store and more hit

Microsoft 365 services were hit on Thursday with many facing issues with Microsoft Outlook, Store, and more, even as the company rushed to fix the matter.

Updated on: Jan 23, 2026 07:05 AM IST
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Microsoft 365 services were hit on Thursday with many facing issues with Microsoft Outlook, Store, and more.

A man uses a phone next to a Microsoft logo. (REUTERS)
A man uses a phone next to a Microsoft logo. (REUTERS)

In a statement, Microsoft said “We're investigating a potential issue impacting multiple Microsoft 365 services, including Outlook, Microsoft Defender and Microsoft Purview. Further information can be found in the admin center under MO1221364.”

At the time of writing, over 11,000 people continued to face issues with Microsoft Outlook, while over 14,000 faced problems with Microsoft 365 overall. Many using Outlook complained about getting a ‘451 4.3.2 Temporary server error’ message and being unable to receive messages.

Also Read | Microsoft down today: Outlook to Microsoft Store, check full list of services and apps facing issues

While the company has not provided an exact time for when services might be restored, they have given a key update on what caused the outage and what they are doing to fix it.

What led to Microsoft 365 outage?

“We've identified a portion of service infrastructure in North America that is not processing traffic as expected. We're working to restore the infrastructure to a healthy state to achieve recovery. More information can be found at https://status.cloud.microsoft or under MO1221364 if accessible,” the full statement on X read.

“We're continuing to review what actions are required to restore the affected infrastructure to a heathy state and rebalance the service traffic to achieve recovery,” Microsoft added.

Reactions to Microsoft outage

While Microsoft works to solve the issue, several people have reacted to the outage on Downdetector pages and online.

“So who or what is Microsoft going to blame for this. The solar flare we just experienced or the brutally cold temperatures in North America. Because -15 is brutal,” one person asked.

Another gave a somewhat positive update, saying “Not calling it as resolved but admin center is now fetching accounts. Extremely slow though.”

 
ABOUT THE AUTHOR
Shuvrajit Das Biswas

Shuvrajit has over seven years of experience covering US, India, and world news. An English Literature postgraduate from Jadavpur University, Shuvrajit started off covering entertainment, gaming and all things pop culture. There were brief periods away from the media industry, with short stints in content marketing, ed-tech and academic editing. However, the newsroom beckoned and over the last few jobs, Shuvrajit has exceedingly focused on team functioning as well, including tracking news and assigning tasks, working on everyday breaking news, framing detailed coverage plans, and creating immersive and data-driven stories. In his time as a digital journalist, he has covered a Lok Sabha election, multiple state elections, Union Budgets and award ceremonies. He has also helped in planning content for company event panels in the past. For work, Shuvrajit enjoys dabbling with data visualization, editing tools, and AI chatbots and attempts to incorporate AI workflows in everyday tasks. He is deeply interested in geopolitics, sports, films and music. Prompting is a new fascination for Shuvrajit now. Apart from that, he can be found doom-scrolling, sharing memes, or cheering on his favorite football team.

Get the latest headlines from US news and global updates from Pakistan, Nepal, UK, Bangladesh, Russia and US Iran war Live, get all the latest headlines in one place on Hindustan Times.
Get the latest headlines from US news and global updates from Pakistan, Nepal, UK, Bangladesh, Russia and US Iran war Live, get all the latest headlines in one place on Hindustan Times.
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