Anthropic (Claude) Outage History
Past incidents and downtime events
Complete history of Anthropic (Claude) outages, incidents, and service disruptions. Showing 50 most recent incidents.
March 2026(17 incidents)
Claude Desktop app unresponsive
4 updates
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.
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.
The issue has been identified and a fix is being implemented.
We have identified the issue and are working on a mitigation. Currently, scheduled tasks are disabled for cowork and claude code desktop.
Filesystem connector missing from Claude Desktop
2 updates
Filesystem extension has been restored to allowlists
The issue has been identified and a fix has been implemented. Users may need to re-add the Filesystem connector to their organization allowlist in order to reactivate it.
Elevated errors on Claude Haiku 4.5
2 updates
Today between 5:35 PT / 13:35 UTC and 6:44 PT / 14:44 UTC Haiku 4.5 had an elevated error rate. We are now at the baseline error rate.
We are currently investigating this issue.
Elevated TCP three-way handshake failures on api.anthropic.com
3 updates
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
Some API requests to api.anthropic.com are experiencing connection timeouts due to network degradation at an upstream peering point. Requests that successfully connect are unaffected. We are working with our upstream providers to resolve the issue.
Elevated errors on Claude Haiku 4.5
3 updates
Errors have returned to the baseline as of 8:08 PT / 16:08 UTC.
A fix has been implemented and we are monitoring the results.
The earlier issues with Haiku 4.5 have reappeared.
Elevated errors on Claude Opus 4.6
2 updates
This incident has been resolved.
We are currently investigating this issue.
Elevated errors on Claude Haiku 4.5
2 updates
The incident for Haiku 4.5 has been between 6:45 PT / 14:45 UTC and 6:50 PT / 14:50 UTC.
We are currently investigating this issue.
Outage in Usage Reporting
7 updates
This incident has been resolved.
We have applied a fix for usage reporting and are monitoring the recovery
A fix has been applied and the admin API is operational. We are continuing to investigate issues with usage reporting via Console and admin API
The team has identified the issues affecting admin API and cost reporting and are working on a fix
The team is investigating ongoing impact to admin API and usage reporting in the console
The team has applied a fix for the admin API. Console and admin API endpoints The team is still investigating an ongoing issue with usage reporting in the console and admin API
The team is currently investigating an issue affecting the admin API and some reporting screens in the Console
Elevated errors on Claude Sonnet 4.6
2 updates
This incident has been resolved.
We are currently investigating this issue.
Elevated errors on Claude Haiku 4.5
2 updates
This incident has been resolved.
We are currently investigating this issue.
Elevated errors on Claude Opus 4.6
9 updates
This incident has been resolved.
We are continuing to monitor for any further issues.
A fix has been implemented and we are monitoring the results.
A fix has been implemented and we are monitoring the results.
We are continuing to work on a fix for this issue.
The issue is reoccurring, a fix is being implemented.
A fix has been implemented and we are monitoring the results.
The issue has been identified and a fix is being implemented.
We are currently investigating this issue.
Elevated errors in claude.ai, cowork, platform, claude code
7 updates
This incident has been resolved.
We are continuing to monitor for any further issues.
A fix has been implemented and we are monitoring the results.
We are continuing to investigate this issue.
We are continuing to investigate this issue.
We are continuing to investigate this issue.
We are currently investigating this issue.
Elevated errors on Claude Haiku 4.5
5 updates
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
We are seeing a repeat of this issue, we are currently investigating.
A fix has been implemented and we are monitoring the results.
We are currently investigating this issue.
Elevated errors on Claude Opus 4.6
5 updates
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
The issue has been identified and a fix is being implemented.
A fix has been implemented and we are monitoring the results.
We are currently investigating this issue.
Elevated errors in claude.ai
2 updates
This incident has been resolved.
We are currently investigating this issue.
Elevated errors on Claude Opus 4.6
5 updates
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
The issue has been identified and a fix is being implemented.
We are continuing to investigate this issue.
We are currently investigating this issue.
Elevated errors on claude.ai, console, and claude code
8 updates
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
We are continuing to work on a fix for this issue.
We have discovered that some API methods are not working and we are investigating.
The issue has been identified and a fix is being implemented.
We have identified that the Claude API is working as intended. The issues we are seeing are related to Claude.ai and with the login/logout paths.
We are continuing to investigate this issue.
We are currently investigating this issue.
February 2026(33 incidents)
Elevated errors on Claude Opus 4.6
2 updates
Between 9:50 PT / 17:50 UTC and 10:12 PT / 18:12 UTC we had a high rate of errors on Claude Opus 4.6. This has now ended
We are currently investigating this issue.
Elevated errors on claude.ai
3 updates
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
We are currently investigating this issue.
Sonnet 4.6 elevated error rate
2 updates
This incident has been resolved.
We are currently investigating this issue.
Claude Desktop login issues
3 updates
This incident has been resolved.
We are continuing to monitor for any further issues.
Some new logins to the Claude Desktop app were not working.
Elevated errors on claude.ai
3 updates
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
We are currently investigating this issue.
Outage in usage reporting
6 updates
This incident has been resolved. Impact: Feb 26 ~02:00 to Feb 27 06:20 UTC. Usage report API endpoints and analytics dashboards experienced errors and missing data due to an internal data service issue. All endpoints have been restored and historical data is now displaying correctly. We apologize for any inconvenience caused.
Usage reporting has been restored across products, but is not returning data for usage that occurred after 2026-02-25 at around 18:40 UTC. The team is able restore this data and is currently working on a fix
We are responding to an outage in usage reporting across products and APIs. The issue has been identified and the team is working on a fix
A fix has been deployed for the /v1/organizations/usage_report/messages admin API endpoint. The team is still working on fixes for other endpoints and services
We are responding to an outage in usage reporting across products and APIs. The issue has been identified and the team is working on a fix
We are responding to an outage in usage reporting via the Console and the admin API's /v1/organizations/usage_report endpoints. The issue has been identified and the team is working on a fix
Elevated errors on claude.ai
2 updates
This incident has been resolved.
We are currently investigating this issue.
Claude Code showing "JSON Parse error: Unexpected EOF" and writing excessive files on Windows
4 updates
We've confirmed this issue is resolved in Claude Code v2.1.61. Run `claude update` for the latest.
We have deployed a fix to this issue in version 2.1.61. Run `claude update` to get the latest version. We are monitoring for config corruption rates in this version since it is a nondeterministic, environment-dependent failure.
We are continuing to work on deploying a hotfix for this issue.
We have identified a bug where Windows users are experiencing significant write contention for the .claude.json global config file, starting with Claude Code 2.1.59. We are working on a hotfix.
Claude Desktop failing to open for some users
6 updates
If Claude fails to launch on your computer, please download the latest version from download the latest version on https://claude.com/download. We have now fixed the underlying issue.
We have released a version that fixes the issue. Please download the latest version of Claude on https://claude.com/download to update to at least v1.1.4328.
We continue to work on getting a fix deployed as quickly as possible.
We are currently working on deploying a fix to the Claude Desktop app.
A fix has been deployed and we're monitoring error rates.
We have identified an issue leading to the Claude Desktop app failing to start for a subset of Windows users and macOS users on older macOS releases. We are working on rolling out a fix.
Elevated errors on Claude Opus 4.6
3 updates
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
We are currently investigating this issue.
Elevated error rates across multiple models
4 updates
This incident has been resolved.
We are continuing to investigate this issue.
We are continuing to investigate this issue.
We are currently investigating this issue.
Elevated errors on Claude Sonnet 4.6 and Opus 4.6
4 updates
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
We are continuing to investigate this issue.
We are currently investigating this issue.
Elevated errors on Claude Sonnet 4.6
3 updates
As of 5:10 PT / 13:10 UTC errors are back to baseline.
Previously this incident named Sonnet 4.5 as the affected model. This is a mistake and the model affected is Sonnet 4.6. Sorry.
We are currently investigating this issue.
Intermittent errors in skills-related functionality
4 updates
This incident has been resolved.
The issue has been identified and a fix is being implemented.
We are continuing to investigate this issue.
We are seeing periods of high error rates in a skills-related service used by claude.ai, Claude Desktop app, and our API.
Elevated errors on Claude Sonnet 4.6
2 updates
As of 23:27 PT / 7:27 UTC the errors are back to the baseline.
We are currently investigating this issue.
Elevated errors on Claude Haiku 4.5
5 updates
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
The issue has been identified and a fix is being implemented.
We are continuing to investigate this issue.
We are currently investigating this issue.
Elevated errors on Claude Sonnet 4.5
3 updates
As of 03:26 PT / 11:26 UTC the error rate has now reduced to the baseline.
The issue has been identified and a fix is being implemented.
We are currently investigating this issue.
Elevated errors on Claude Opus 4.6
4 updates
As of 01:30 PT / 09:30 UTC the error rates have returned to baseline
A fix has been implemented and we are monitoring the results.
The issue has been identified and a fix is being implemented.
We are currently investigating this issue.
Opus 4.6 elevated error rates
2 updates
This incident has been resolved.
We are currently investigating this issue.
Some Windows users unable to use Cowork
1 update
Some Windows users on v1.1.3918 of Desktop saw a "Virtualization is not enabled" message and were not able to use Cowork. Resolved in v1.1.3963
Sonnet 4 errors
3 updates
This incident has been resolved.
The issue has been identified and a fix is being implemented.
We are currently investigating this issue.
Elevated errors on Claude Sonnet 4.5
4 updates
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
The issue has been identified and a fix is being implemented.
We are currently investigating this issue.
Claude's responses not appearing in Cowork
3 updates
This incident has been resolved.
We are continuing to investigate this issue.
We are currently investigating this issue.
Elevated error rates across multiple models
4 updates
This incident has been resolved.
We are continuing to monitor for any further issues.
A fix has been implemented and we are monitoring the results.
We are currently investigating this issue.
Elevated errors on Claude Sonnet 4.6
4 updates
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
The issue has been identified and a fix is being implemented.
We are currently investigating this issue.
Elevated errors on Claude Opus 4.5
4 updates
This incident has been resolved.
We are continuing to monitor for any further issues.
A fix has been implemented and we are monitoring the results.
The issue has been identified and a fix is being implemented.
Cowork new task page not loading
3 updates
This incident has been resolved.
The issue has been identified and a fix is being implemented.
We are currently investigating this issue.
CSS errors on Claude.ai
4 updates
This incident has been resolved.
We are continuing to monitor for any further issues.
A fix has been implemented and we are monitoring the results.
We are currently investigating this issue.
opus 4.6 elevated errors
3 updates
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
The issue has been identified and a fix is being implemented.
New user-created skills are not working in Claude.ai
2 updates
This incident has been resolved.
We are currently investigating an issue with new user-created skills on Claude.ai. Our team is actively working to identify the root cause.
Elevated errors on Claude Sonnet 4.5
4 updates
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
The issue has been identified and a fix is being implemented.
We are currently investigating this issue.
Elevated errors on Claude Opus 4.6
6 updates
This incident has been resolved.
We are continuing to monitor for any further issues.
A fix has been implemented and we are monitoring the results.
We are continuing to work on a fix for this issue.
The issue has been identified and a fix is being implemented.
We are currently investigating this issue.
Elevated errors on Claude Opus 4.6
4 updates
This incident has been resolved.
A fix has been implemented and we are monitoring the results.
The issue has been identified and a fix is being implemented.
We are currently investigating this issue. Our team is actively working to identify the root cause.