Microsoft outage fades after hitting Dutch offices and councils

The worldwide Microsoft 365 outage that disrupted Dutch municipalities, courts, hospitals and companies is easing, but Microsoft has not yet named the exact cause.

The latest: Microsoft said the outage is subsiding. Reports on the Allestoringen.nl outage-tracking site peaked around 09:00 on Friday and dropped sharply from about 12:30. Microsoft also said it sees "encouraging progress" in recovery, but it could not say when the problem will be fully fixed.

What happened:

  • Problems began on Thursday afternoon around 17:15 Dutch time, hitting Outlook, Teams and the AI assistant Copilot.
  • Microsoft first pointed to "increased load" on its infrastructure after some servers became unexpectedly unavailable.
  • A Microsoft spokesperson later said the problem arose during a network capacity upgrade.
  • Microsoft said it was not a cyberattack and had nothing to do with AI.
  • According to Downdetector, which logged hundreds of thousands of complaints, users in more than 70 countries were affected.
  • Microsoft apologised on Friday.

In the Netherlands:

  • Courts could not send or receive email, but a spokesperson said they could be reached by phone.
  • The municipalities of Leeuwarden and Barneveld reported email problems.
  • The Dijklander Ziekenhuis, Ziekenhuis Amstelland and Noordwest Ziekenhuisgroep could not receive or answer email. The Dijklander asked patients with urgent questions to phone.
  • Rabobank said customers were not affected, but colleagues could only partly stay in touch via Teams and OneDrive.
  • NOS, RTL and many regional broadcasters mostly consulted by phone. NU.nl said it had no problems because it uses different IT infrastructure.
  • Universities and associations were also affected. A UvA lecturer said she could not reach colleagues, so releasing grades that day would not work.

KNVB and De Toppers:

  • The KNVB is deploying extra staff at the service desk for the Netherlands-Greece match, which starts at 20:45 on Friday. Some fans may be unable to open tickets sent to Microsoft email accounts.
  • Verification codes for the KNVB Oranje app may also fail to arrive. The KNVB said fans already logged in can use their tickets. Ticket forwarding is temporarily switched off.
  • The service desk at the stadium opens at 15:30 for fans who still have problems.
  • De Toppers postponed the announcement of their new line-up to Monday. The organisation said the launch depends on the technical problems being fully resolved.

What experts said: Kor Gerritsma of IT consultancy Strict said companies are responsible for keeping work going and cannot assume Microsoft will solve everything. Jochem van Lierop of Conclusion Mission Critical said a cancelled meeting is annoying, but unprocessed orders or unhelped customers are a serious problem.

By the numbers: More than 430 million people use Microsoft 365 worldwide. NU.nl noted that not all of them were necessarily affected.