Degraded functionality for Claude Cowork on Windows
View the provider incident record →Current answer
Anthropic (Claude) experienced a major incident: Degraded functionality for Claude Cowork on Windows. ServiceAlert observed recovery on Sep 14, 2026.
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Incident Lifecycle
Affected Components
Claude Cowork
Incident Timeline
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.
Sep 10, 2026 at 3:54 PM UTC
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