Microsoft 365 Disruption Likely Technical, Not Cyberattack
NACSA said the outage affected Outlook and Teams for tens of thousands of users and warned agencies to watch for phishing attempts.
- On Friday, November 13, 2026, the National Cyber Security Agency confirmed the widespread Microsoft 365 outage stems from technical and infrastructure issues rather than malicious interference.
- Microsoft Service Health Status updates indicate the global glitch resulted from traffic management imbalances and server availability strain across Microsoft's infrastructure affecting Outlook, Teams, and Defender XDR.
- Downdetector saw over 200,000 user reports of service issues across affected Microsoft products, though Teams and SharePoint have already begun seeing recovery.
- NACSA and CyberSecurity Malaysia warned the public to beware of opportunistic phishing scams, advising organizations to report suspicious incidents immediately to Cyber999 via hotline at 1-300-88-2999.
- As of publication, the Microsoft Service Health Status webpage lists Microsoft 365 under a "Service degradation" status, with National Critical Information Infrastructure entities advised to monitor official channels for updates.
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There was a large-scale malfunction in Microsoft services due to the massive breakdown of the servers, and the companies stated that they had not detected any signs of cyber attacks and that infrastructure rehabilitation was taking place gradually.
Nacsa: Microsoft outage due to technical or infrastructure issues, not cyberattack
In a notice posted on its Facebook page, the National Cyber Security Agency (Nacsa) says that, based on current information, the global Microsoft 365 outage is more likely due to technical or infrastructure issues rather than a cyberattack.
Microsoft 365 outage enters second day as failed server recovery prolongs global disruption
Microsoft’s efforts to restore its Microsoft 365 productivity platform have extended into a second day after repeated server failures prolonged read more Microsoft 365 outage enters second day as failed server recovery prolongs global disruption
Microsoft suffered a major global outage, paralyzing many of its most popular tools, from email to cloud storage services—with the effects felt across the globe. In a statement on its X platform, the company said it was “intensively reviewing every possible solution to mitigate the […] It Wasn’t a Cyberattack: What Caused the Global Outage at Microsoft
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