Failures in Microsoft services affected 321 million users

Failures in Microsoft services affected 321 million users

After Microsoft will report failures in some of the services that make up its ecosystem such as Outlook, Teams and OneDrivethe first effects of a global-scale decline are beginning to be seen.

The global impacts have harmed more than 3.7 million companies: 30% global share, according to 2025 figures from Dynamics Connect. According to the same analysis portal, Microsoft 365 It has more than 345 million activated accounts and 321 million active users (who are constantly connected to its platforms), were affected by the failures.

Although you can access the websites of Outlook, Teams, OneDrive either Microsoft 365, Many of the platforms’ services, such as sending emails, are not yet enabled.

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Hours after the fall, Microsoft announced that its services Outlook, Teams and OneDrive would be back to normal in 48 hours (tomorrow, Sunday), from your account x.
The failures would be causing users to not be able to access their mailbox; Connectivity with other services that are part of the ecosystem could also be affected. Microsoft 365 for users in any region.

“To protect delayed mail, we have extended the email timeout window to 48 hours while queue and backlog processing continues,” the company noted. These flaws affect millions of corporate licenses in 149 countries.

According to Downdetectorwhich tracks outages by collecting status reports from various sources, more than 97,000 incidents were recorded from users reporting problems with Outlook. The actual number of affected users may vary.

Downdetector also recorded more than 38,000 user notifications about problems with Microsoft 365 and some 4,500 notifications from users with difficulties accessing Teams.

“We have made additional progress toward recovery, with actions completed on portions of the affected infrastructure and traffic being gradually restored. We are seeing improvements in key scenarios, including access to mailboxes and processing of delayed emails, although some intermittent problems may continue,” said the company founded in 1975.

The mail service is used by 400 million people around the world, and the failures would be occurring in the Americas. “We are investigating reports of users experiencing problems accessing mailboxes. Exchange Online through various connection methods in the Americas,” they noted from the software multinational.

According to the doctor in Computer Engineering and Control at the Turin Polytechnic, Gustavo Ramírez Espinosa, “What they have said is that it has been an overload. The overload can be for several reasons: one, that a system has been protected; that load balancing has not worked or that there has been a computer attack called denial of service, which what it does is that it makes many requests to a server and the server cannot attend to them all”.

Another of the hypotheses that he handled Ramirez To explain the crash it was a system error. “Many crashes that have occurred are sometimes not a reason for an attack, but rather bad configurations or sometimes even due to deployments that are entrusted to artificial intelligence and errors can be made.”

The expert pointed out that, regardless of the cause, what is certain is that it will take time to repair the breakdown.

“What I am sure of is that recovering the system must take time, because, if it is a system that was protected, it was considered that there was an attack or that the overload did not work, and all services must be enabled gradually so that it does not happen again and the service goes down again,” he concluded. Ramirez Espinosa.

The consequences of the failure in Colombia

Measures were also taken in the national territory after Microsoft and its different corporate applications failed last Thursday at noon. He Sectional Council of the Judiciary, in Bogotá, decided to authorize the suspensions of judicial terms dated yesterday, Friday, November 13.

According to the entity, tools such as Outlook, Teams, Copilot, OneDrive, SharePoint, Word, Excel and PowerPoint online have been affected by the failures, which is why the operation within the Sectional Council would have been affected.