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Microsoft says a new fix is starting to stabilise its servers after more than 13 hours of disruption to Outlook, Teams and other Microsoft 365 services. In its latest update around 1 pm IST, the company said a patch to a component that handles authentication and routing is producing positive results on part of its infrastructure, and it plans to roll it out further as more regions come back online. Here is Microsoft’s full statement: “We’re seeing positive results for server stability after applying an upstream authentication/routing configuration component patch to a portion of our infrastructure. We’ll continue to monitor its progress and are working to expand it to servers supporting active regions coming online.” The company repeated that it is not aware of any malicious activity behind the incident and will treat the outage as a priority until it is fully resolved.

Microsoft said on Friday that its efforts to restore Outlook, Teams and other Microsoft 365 services have shown only marginal success so far. In its latest update, the company said it is checking server performance across regions and confirming that patches are working correctly after systems are rebooted. At the same time, Microsoft is adding more virtual machines to increase capacity and ease the load on its overwhelmed servers. The company has still not given a timeline for full recovery. It repeated that it has found no evidence of malicious activity and will publish a detailed report on the cause once the issue is resolved. Microsoft’s next update is due at 7:30 am UTC, or 1 pm IST, just 30 minutes after the previous one, suggesting engineers are now moving to more frequent checks as repairs continue.

The global Microsoft 365 outage could be costing businesses billions of dollars, with professional services firms among the hardest hit, according to RSM Australia risk advisory partner Ashwin Pal. In an interview with ABC, Pal estimated that for professional services, the disruption costs more than $100,000 for every hour Outlook, Teams and other Microsoft apps remain down. The outage began around 3:15 am Sydney time on Friday and has now stretched to roughly 13 hours. With nearly 4 million businesses worldwide relying on Microsoft’s office software, total losses are likely to run into the billions, ABC News reported. Small businesses are expected to suffer the most, since many depend heavily on email and lack backup systems to keep working. Microsoft has not yet given a timeline for full recovery, and its next update is due at 12:30 pm IST.

Microsoft has set its next update on the Microsoft 365 outage for 7 am UTC on Friday, which is 12:30 pm in India, as engineers continue working to restore services. The company now lists the incident as a service degradation affecting users’ ability to connect to multiple Microsoft 365 apps. Features linked to Exchange Online, which runs Outlook email and calendars, are hit hardest. Users may be unable to open their mailboxes on the web, desktop or mobile, and email delivery may be delayed. In Teams, calls, meetings and chats mostly work, but calendar scheduling and meeting invites are failing. SharePoint files can still be opened. Microsoft 365 Copilot may not load or reach work data, while security tools including Defender, Intune and Purview are also affected. Microsoft said it is taking a careful approach to repairing faulty servers and confirming fixes are applied. It still sees no sign of malicious activity and will publish a full report on the cause once services recover.

ChatGPT and Claude are not down as a whole, but both AI assistants have lost access to users’ Microsoft work data because of the ongoing Microsoft 365 outage. The problem lies in the Microsoft 365 connectors that let the assistants read Outlook email, calendars, Teams chats and SharePoint files. Since that data sits on Microsoft’s servers, the connectors stopped working once those servers failed on Thursday. OpenAI’s status page shows elevated errors for its Microsoft 365 connector, warning that new connections may fail and tools may not work properly. Anthropic reported similar issues for Claude, including its Claude for Outlook add-in, and linked them to Microsoft’s incident. Anthropic listed its API and Claude Code as working normally, while claude.ai showed degraded performance without saying whether it was related. Microsoft has said the outage was caused by overloaded software that handles secure connections, not a cyber attack. Users should check each company’s status page if the main apps stop responding.

Millions of Outlook and Teams users are waiting on Microsoft’s next status report, reportedly scheduled for 11:30 am India time on Friday, to learn if the long-running outage is close to an end. Engineers have so far struggled to bring services back to normal. Microsoft’s last message explained that its repair attempts set off a flood of internal requests between its routing layer and the servers behind it, overwhelming machines that could not forward the traffic. To cope, the company is spinning up extra computing capacity and forcing a recent network update onto servers that have locked up. Many of those servers have refused to take the update, slowing progress. The coming statement may confirm whether the added capacity is reducing strain, whether the frozen machines have been revived, and whether Microsoft is ready to commit to a time for full restoration. More than 10 hours in, the company still says there is no sign of hacking or malicious activity behind the disruption.

Microsoft has not said when Outlook, Teams and other Microsoft 365 services will be fully working again, as the global outage continues past 10 hours. Its next update is due at 5 pm Australian Eastern time, which is 11:30 am IST on Friday. In its latest statement, Microsoft said its fixes triggered a sharp rise in traffic from its routing systems to backend servers, which could not route requests properly. The company is adding more virtual machines to ease the load and trying to force a recent network change onto servers stuck in a faulty state. However, many of those machines are not accepting the update as expected. Microsoft said some services have partly recovered, but the improvement has not held, and the outage is not believed to be caused by malicious activity. For now, SharePoint users can still open, edit and save files, though shared mailboxes and calendars that rely on Exchange Online may not work properly.

Outlook, Teams and other Microsoft 365 services have been disrupted for more than 10 hours, with users in India among those affected by the global outage. Reports on Downdetector peaked at around 1:30 am IST on Friday with 1,38,058 complaints, before easing to about 34,490 by 4:30 am. In an update at 3:30 am IST, Microsoft said services were slowly recovering as users reconnected. The company traced the problem to a process that sets up secure connections on its servers, which became overloaded and caused the servers to stop handling requests. Microsoft is testing a configuration fix on a small group of servers before a wider rollout, restarting affected systems and reversing a recent network change that coincided with the start of the outage. The disruption has also hit Microsoft 365 connectors used by OpenAI and Anthropic, affecting how their AI tools link to Outlook and Teams. Microsoft has said the outage was not caused by a cyber attack.

Microsoft says the global outage hitting Outlook, Teams and other Microsoft 365 services was not caused by a cyber attack or a surge in users. The company said some of the servers running these services stopped working, leaving the remaining servers overloaded. The disruption began early Friday Australian time, or late Thursday night in India, and has now lasted more than 10 hours. Microsoft said its latest fixes are not working as expected and it still cannot say when full service will return. Some servers are back online and a few regions have partly recovered, but restored servers froze again once users logged back in. Affected services include Outlook email, Teams, SharePoint, Microsoft 365 Copilot, Intune and Defender security tools. Downdetector logged about 120,000 Outlook outage reports worldwide in the early hours. In Australia, government agencies, councils and Queensland Health were among those hit. It is Microsoft 365’s third major outage this year, after disruptions in January and August.