Loading market event…
Loading market event…
Worth noting Market event Thu, Nov 12 1 min read
A widespread Microsoft outage began Thursday, November 12, disrupting Outlook email, Teams meetings and the Copilot AI assistant, and continued into Asia-Pacific working hours on Friday.[1][2] Users in more than 70 countries were affected, including businesses and government agencies.[3]
Microsoft initially said some servers had unexpectedly become unavailable, overloading the remaining infrastructure; it later attributed the disruption to a network capacity upgrade.[4][5] By later Friday, Microsoft said service was returning to normal, following a significant reduction in queued emails toward normal levels, though these updates did not establish a complete recovery across all services.[6][7]
Businesses turned to phones, faxes and other workarounds when email and meeting services failed.[8] Reorganizing work and clearing backlogs takes staff time, so the cost of getting everyday work done can rise even when software subscription fees stay unchanged.
The outage also interrupted Microsoft-connected features in ChatGPT and Anthropic's Claude, showing how one provider's disruption can travel through links between software products.[1] That gives customers a reason to reassess backup communication channels and supplier reliability. Any sales opportunity for alternatives depends on customers changing their purchases; the supplied reports do not establish customer departures or financial losses.
Businesses using Microsoft's email and meeting services had to use backup channels and face catch-up work as access returns. Rivals gain an opening to compete on reliability, but winning customers depends on businesses changing their purchases.[8][6]
ChatGPT and Claude users lost access to some Microsoft-connected functions. Vendors supplying these tools to businesses also need to account for external service failures when assessing their own products' reliability.[1]