Home
Uptime monitoring Observability AI monitoring Real User Monitoring Incident response Integrations & API AI assistants (MCP) Explore the platform →
Pricing
Uptime Calculator Cron Expression Builder HTTP Status Codes Is It Down? All free tools
Platform Blog About Contact FAQ Partners
Sign in Start free

Claude incident

Degraded functionality for Claude Cowork on Windows

Resolved after 4 days.

Started
Ended
Worst state
Partial outage
On Claude’s status page
Source
Components
Claude Cowork

Live Claude status Full Claude outage history

Timeline

  1. Claude status page · Reported Degraded functionality for Claude Cowork on Windows
  2. Claude status page · Identified A Windows update released September 8 has left Claude Cowork on Windows unable to run local commands, because its workspace can no longer reach your computer's drive. For most users, chat and file reading and editing still work. There's no in-app workaround yet, and restarting or reinstalling won't help. Microsoft has developed a fix and is working to release it. We'll post an update when we have more to share.
  3. Claude status page · Resolved This issue has been resolved. Microsoft has released a September 14 Windows update that fixes it: https://support.microsoft.com/en-us/servicing/os/windows-11/2026/09/kb5129195-windows-11-24h2-25h2-security-update

Cite this incident

Site Qwality, “Degraded functionality for Claude Cowork on Windows,” Sep 10, 2026, https://siteqwality.com/is-claude-down/incidents/claude-202609101554/

Free to quote with a link to this page.