If you noticed Cloudflare, Claude (the AI chatbot), or Outlook acting weird on Friday, November 13, 2026, you weren't alone.
Users reported issues with all three around the same time, making it a rough day for anyone trying to get work done.
The interesting part? Cloudflare went down for a separate reason, while Claude's Microsoft 365-connected features were affected by the same Microsoft 365 disruption affecting Outlook.
Durable Objects error, Microsoft 365 issues
Cloudflare's glitch came from errors in its Durable Objects service but was sorted out pretty quickly.
Claude ran into trouble because of its link with Microsoft 365, which messed up email and calendar access.
Meanwhile, Outlook struggled with too much traffic and internal connection problems inside Microsoft 365.
These back-to-back outages show how connected online services are; if one has issues, others can feel it too.