Summary
This incident has been resolved.
Impact
major
Timeline
[investigating] We are currently investigating this issue.
via statuspage[investigating] We have identified the issue and are working on a mitigation. Currently, scheduled tasks are disabled for cowork and claude code desktop.
via statuspage[identified] The issue has been identified and a fix is being implemented.
via statuspage[identified] Root cause: Users with scheduled tasks in Claude Cowork or Claude Code who are in a timezone that observed daylight saving time last night were affected by an infinite loop. When the app tried to locate tasks scheduled during the “skipped” hour, it couldn’t resolve them and got stuck.
via statuspage[monitoring] Root cause: Users with scheduled tasks in Claude Cowork or Claude Code who are in a timezone that observed daylight saving time last night were affected by an infinite loop. When the app tried to locate tasks scheduled during the “skipped” hour, it couldn’t resolve them and got stuck. Fix: Update to version 1.1.5749 via https://claude.com/download. If you’re unable to update right away, temporarily switching to a timezone that doesn’t observe daylight saving time will also resolve the issue. We’re working on a backend fix as well. We know disruptions to Claude affect your work, and we apologize for the trouble.
via statuspage[resolved] This incident has been resolved.
via statuspageLessons Learned
⚠Anthropic has experienced 33 incidents in the past year. This frequency suggests systemic reliability challenges that may warrant additional monitoring.
📊Incidents related to api have occurred 182 times across all providers in the past year. This is one of the most common failure categories in cloud infrastructure.
💡This incident is categorized as: API Issue. Consider implementing preventive measures specific to this failure category.
Similar Incidents
Elevated 500 errors from Browser Rendering REST API
Cloudflare · Mar 11, 2026
Elevated errors on Claude.ai (including login issues for Claude Code)
Anthropic · Mar 11, 2026
Degraded experience with Copilot Code Review
GitHub · Mar 11, 2026
Increased errors with ChatGPT file downloads
OpenAI · Mar 10, 2026
Increased errors on ChatGPT File Uploads
OpenAI · Mar 10, 2026