- Level
- confirmed
- Worst impact
- Partial outage
- Down Index
- 48of 100
What to do
Check whether your product depends on Anthropic. Check your stack
Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.Confirm your retries, queues and scheduled jobs caught up after the 1d 22h it lasted.
Anything that failed between 2026-03-08 17:57 UTC and 2026-03-10 16:52 UTC may need a replay.Subscribe to Anthropic's feed to hear about the next one first. RSS feed
https://down.guide/feed?provider=anthropic works in Slack (/feed subscribe), Discord feed bots and any RSS reader.
Updates from Anthropic 5
- investigating
We have identified the issue and are working on a mitigation. Currently, scheduled tasks are disabled for cowork and claude code desktop.
provider
- identified
The issue has been identified and a fix is being implemented.
provider
- 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.
provider
- 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.
provider
- resolved
This incident has been resolved.
provider
Reports count in aggregate; nothing about you is shown.
Corrections
None so far.
Something wrong on this page? Report an error or send us a note. Every fix is listed here.
Questions about DWN-8287c5ec14
Is Anthropic still down?
No, this incident was resolved 2026-03-10 16:52 UTC. For Anthropic's live state, see https://down.guide/anthropic.
How long did it last?
1d 22h, from 2026-03-08 17:57 UTC to 2026-03-10 16:52 UTC, by the times Anthropic posted.
What caused it?
Anthropic hasn't published a root cause. If it does, it shows here.
Where does this come from?
Anthropic's official status page, https://status.claude.com, quoted verbatim. down.guide's own probes, reports and social counts are labeled as ours.