How often does Anthropic (Claude) have outages?

Anthropic (Claude) has had 50 reported incidents recently. Visit apistatuscheck.com/incidents/anthropic for the complete outage history with timelines and resolution details.

What was the last Anthropic (Claude) outage?

The most recent Anthropic (Claude) incident was "Elevated error rates on Claude Opus and Sonnet 4.6" on March 21, 2026. It was classified as major impact and is currently resolved.

Anthropic (Claude) Outage History

50 incidents reported. Data sourced from the official Anthropic (Claude) status page.

Total Incidents

Major/Critical

Minor

Resolved

March 2026

Elevated error rates on Claude Opus and Sonnet 4.6

major

Mar 21, 12:07 AM→Mar 21, 01:42 AMresolved

Mar 21, 01:42 AM

resolved — This incident has been resolved.

Mar 21, 12:58 AM

identified — We have observed success rates return to normal for Claude Opus 4.6, and are working to fully resolve elevated errors for Claude Sonnet 4.6.

Mar 21, 12:17 AM

identified — We have identified an issue resulting in elevated errors on both Claude Opus and Sonnet 4.6, and are working to resolve this issue as quickly as possible.

+1 more updates

Elevated errors on Claude Opus 4.6

critical

Mar 19, 03:59 PM→Mar 19, 04:16 PMresolved

Mar 19, 04:16 PM

resolved — This incident started at 8:53 PT / 15:53 UTC and the errors have now returned to baseline since 9:14 PT / 16:14 UTC.

Mar 19, 03:59 PM

investigating — We are currently investigating this issue.

Elevated errors on Claude Sonnet 4.6

minor

Mar 19, 03:37 PM→Mar 19, 03:46 PMresolved

Mar 19, 03:46 PM

resolved — As of 8:42 PT / 15:42 UTC the error rate has now returned to baseline.

Mar 19, 03:37 PM

investigating — We are currently investigating elevated errors that started at 8:23 PT / 15:23 UTC.

Elevated errors across surfaces

major

Mar 19, 12:28 AM→Mar 19, 01:38 AMresolved

Mar 19, 01:38 AM

resolved — This incident has been resolved.

Mar 19, 01:21 AM

monitoring — From 23:59–00:30 UTC, users experienced elevated errors when trying to authenticate across various Claude surfaces including Claude.ai and Claude Code. This issue has been resolved, and we are monitor...

Mar 19, 12:28 AM

investigating — We are currently investigating this issue. Our team is actively working to identify the root cause.

Elevated errors on Claude.ai

major

Mar 18, 03:16 PM→Mar 18, 04:05 PMresolved

Mar 18, 04:05 PM

resolved — This incident has been resolved.

Mar 18, 03:27 PM

monitoring — A fix has been implemented and we are monitoring the results.

Mar 18, 03:19 PM

investigating — Claude Code login/logout actions are also affected by this outage.

+1 more updates

Increased errors on Opus 4.6

major

Mar 18, 12:30 PM→Mar 18, 01:58 PMresolved

Mar 18, 01:58 PM

resolved — This incident has been resolved.

Mar 18, 01:25 PM

monitoring — A fix has been implemented and we are monitoring the results.

Mar 18, 01:19 PM

monitoring — A fix has been implemented and we are monitoring the results.

+1 more updates

Elevated errors on Claude Opus 4.6

major

Mar 18, 06:41 AM→Mar 18, 09:45 AMresolved

Mar 18, 09:45 AM

resolved — This incident has been resolved.

Mar 18, 07:29 AM

monitoring — A fix has been implemented and we are monitoring the results.

Mar 18, 06:41 AM

investigating — We are currently investigating this issue.

Elevated errors on Claude Opus 4.6

major

Mar 17, 07:47 PM→Mar 18, 12:25 AMresolved

Mar 18, 12:25 AM

resolved — This incident has been resolved.

Mar 17, 10:34 PM

monitoring — A fix has been implemented and we are monitoring the results.

Mar 17, 08:41 PM

investigating — We are currently investigating this issue. We have identified mitigations which we are continuing to regularly employ as we investigate the root cause.

+2 more updates

Elevated errors on Claude Sonnet 4.6

minor

Mar 17, 02:07 PM→Mar 17, 03:45 PMresolved

Mar 17, 03:45 PM

resolved — This incident has been resolved.

Mar 17, 03:28 PM

monitoring — A fix has been implemented and we are monitoring the results.

Mar 17, 03:21 PM

identified — We are continuing to work on a fix for this issue.

+1 more updates

Elevated errors on Claude Sonnet 4.6

minor

Mar 17, 08:04 AM→Mar 17, 01:03 PMresolved

Mar 17, 01:03 PM

resolved — This incident has been resolved.

Mar 17, 12:13 PM

monitoring — A fix has been implemented and we are monitoring the results.

Mar 17, 11:59 AM

identified — We are continuing to work on a fix for this issue.

+3 more updates

Elevated errors on Claude Opus 4.6

minor

Mar 17, 09:46 AM→Mar 17, 11:45 AMresolved

Mar 17, 11:45 AM

resolved — This incident has been resolved.

Mar 17, 11:37 AM

monitoring — A fix has been implemented and we are monitoring the results.

Mar 17, 10:02 AM

identified — The issue has been identified and a fix is being implemented.

+1 more updates

Elevated errors on Claude Sonnet 4.6

minor

Mar 16, 02:02 PM→Mar 16, 04:35 PMresolved

Mar 16, 04:35 PM

resolved — This incident has been resolved.

Mar 16, 03:35 PM

identified — We are continuing to work on a fix for this issue. This is currently only impacting free Claude.ai users.

Mar 16, 03:13 PM

identified — We are continuing to work on a fix for this issue.

+4 more updates

Elevated errors on Claude.ai

minor

Mar 16, 01:56 PM→Mar 16, 02:21 PMresolved

Mar 16, 02:21 PM

resolved — This incident has been resolved.

Mar 16, 01:56 PM

investigating — We are currently investigating this issue.

Elevated errors on Claude.ai

minor

Mar 16, 12:01 PM→Mar 16, 12:36 PMresolved

Mar 16, 12:36 PM

resolved — This incident has been resolved.

Mar 16, 12:27 PM

monitoring — A fix has been implemented and we are monitoring the results.

Mar 16, 12:01 PM

investigating — We are currently investigating this issue.

Elevated errors on Claude Opus 4.6 and Sonnet 4.6

major

Mar 13, 06:37 PM→Mar 13, 09:27 PMresolved

Mar 13, 09:27 PM

resolved — This incident has been resolved.

Mar 13, 06:37 PM

investigating — We are currently investigating this issue.

Elevated errors on Claude Sonnet 4.6

major

Mar 12, 04:34 PM→Mar 12, 06:00 PMresolved

Mar 12, 07:48 PM

resolved — This incident has been resolved.

Mar 12, 04:34 PM

identified — A repeat of an earlier issue today started at 9:27 PT / 16:27 UTC.

Elevated errors on Claude Sonnet 4.6 and on Claude.ai

minor

Mar 12, 04:07 PM→Mar 12, 04:28 PMresolved

Mar 12, 04:28 PM

resolved — This incident has been resolved.

Mar 12, 04:07 PM

monitoring — We recently had an incident on Sonnet 4.6 between 8:30 PT / 15:30 UTC and 8:44 PT / 15:44 UTC where users would have seen a higher error rate across Claude Code, Claude API, and Claude.ai. Separately...

Elevated errors on Sonnet 4.6

minor

Mar 12, 03:42 PM→Mar 12, 03:48 PMresolved

Mar 12, 03:48 PM

resolved — This incident has been resolved.

Mar 12, 03:42 PM

investigating — We are currently investigating this issue.

Elevated errors on Claude.ai (including login issues for Claude Code)

minor

Mar 11, 02:44 PM→Mar 11, 05:28 PMpostmortem

Mar 11, 05:56 PM

postmortem — Between 14:17 and 17:11 UTC, our primary application database experienced severely degraded I/O performance following a routine maintenance operation, causing slow or failed requests on [Claude.ai](ht...

Mar 11, 05:28 PM

resolved — The incident is now resolved. To recap we had an incident starting at 07:17 PT / 14:17 UTC and the errors returned to baseline at 10:11 PT / 17:11 UTC.

Mar 11, 05:22 PM

monitoring — A fix has been implemented and we are monitoring the results.

+6 more updates

Claude Desktop app unresponsive

major

Mar 8, 05:57 PM→Mar 10, 04:52 PMresolved

Mar 10, 04:52 PM

resolved — This incident has been resolved.

Mar 8, 07:42 PM

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 loca...

Mar 8, 07:42 PM

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 loca...

+2 more updates

Filesystem connector missing from Claude Desktop

minor

Mar 6, 05:16 PM→Mar 8, 03:49 PMresolved

Mar 8, 03:49 PM

resolved — Filesystem extension has been restored to allowlists

Mar 6, 05:16 PM

identified — 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

minor

Mar 7, 01:58 PM→Mar 7, 04:58 PMresolved

Mar 7, 04:58 PM

resolved — 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.

Mar 7, 01:58 PM

investigating — We are currently investigating this issue.

Elevated TCP three-way handshake failures on api.anthropic.com

minor

Mar 6, 03:34 PM→Mar 6, 04:23 PMresolved

Mar 6, 04:23 PM

resolved — This incident has been resolved.

Mar 6, 04:01 PM

monitoring — A fix has been implemented and we are monitoring the results.

Mar 6, 03:34 PM

investigating — 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 w...

Elevated errors on Claude Haiku 4.5

minor

Mar 4, 03:58 PM→Mar 4, 05:01 PMresolved

Mar 4, 05:01 PM

resolved — Errors have returned to the baseline as of 8:08 PT / 16:08 UTC.

Mar 4, 04:13 PM

monitoring — A fix has been implemented and we are monitoring the results.

Mar 4, 03:58 PM

investigating — The earlier issues with Haiku 4.5 have reappeared.

Elevated errors on Claude Opus 4.6

minor

Mar 4, 02:14 PM→Mar 4, 03:57 PMresolved

Mar 4, 03:57 PM

resolved — This incident has been resolved.

Mar 4, 02:14 PM

investigating — We are currently investigating this issue.

Elevated errors on Claude Haiku 4.5

minor

Mar 4, 02:47 PM→Mar 4, 02:55 PMresolved

Mar 4, 02:55 PM

resolved — The incident for Haiku 4.5 has been between 6:45 PT / 14:45 UTC and 6:50 PT / 14:50 UTC.

Mar 4, 02:47 PM

investigating — We are currently investigating this issue.

Outage in Usage Reporting

major

Mar 3, 04:49 PM→Mar 4, 08:32 AMresolved

Mar 4, 08:32 AM

resolved — This incident has been resolved.

Mar 4, 01:29 AM

monitoring — We have applied a fix for usage reporting and are monitoring the recovery

Mar 4, 12:58 AM

identified — 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

+4 more updates

Elevated errors on Claude Sonnet 4.6

minor

Mar 3, 03:40 PM→Mar 3, 04:38 PMresolved

Mar 3, 04:38 PM

resolved — This incident has been resolved.

Mar 3, 03:40 PM

investigating — We are currently investigating this issue.

Elevated errors on Claude Haiku 4.5

major

Mar 3, 02:51 PM→Mar 3, 03:39 PMresolved

Mar 3, 03:39 PM

resolved — This incident has been resolved.

Mar 3, 02:51 PM

investigating — We are currently investigating this issue.

Elevated errors on Claude Opus 4.6

minor

Mar 3, 06:59 AM→Mar 3, 02:29 PMresolved

Mar 3, 02:29 PM

resolved — This incident has been resolved.

Mar 3, 02:29 PM

monitoring — We are continuing to monitor for any further issues.

Mar 3, 02:11 PM

monitoring — A fix has been implemented and we are monitoring the results.

+6 more updates

Elevated errors in claude.ai, cowork, platform, claude code

minor

Mar 3, 03:15 AM→Mar 3, 10:18 AMresolved

Mar 3, 10:18 AM

resolved — This incident has been resolved.

Mar 3, 09:36 AM

monitoring — We are continuing to monitor for any further issues.

Mar 3, 08:39 AM

monitoring — A fix has been implemented and we are monitoring the results.

+4 more updates

Elevated errors on Claude Haiku 4.5

minor

Mar 2, 05:56 PM→Mar 2, 09:16 PMresolved

Mar 2, 09:16 PM

resolved — This incident has been resolved.

Mar 2, 06:54 PM

monitoring — A fix has been implemented and we are monitoring the results.

Mar 2, 06:18 PM

investigating — We are seeing a repeat of this issue, we are currently investigating.

+2 more updates

Elevated errors on Claude Opus 4.6

minor

Mar 2, 04:50 PM→Mar 2, 05:55 PMresolved

Mar 2, 05:55 PM

resolved — This incident has been resolved.

Mar 2, 05:24 PM

monitoring — A fix has been implemented and we are monitoring the results.

Mar 2, 05:15 PM

identified — The issue has been identified and a fix is being implemented.

+2 more updates

Elevated errors in claude.ai

minor

Mar 2, 05:08 PM→Mar 2, 05:23 PMresolved

Mar 2, 05:23 PM

resolved — This incident has been resolved.

Mar 2, 05:08 PM

investigating — We are currently investigating this issue.

Elevated errors on Claude Opus 4.6

minor

Mar 2, 02:35 PM→Mar 2, 03:50 PMresolved

Mar 2, 03:50 PM

resolved — This incident has been resolved.

Mar 2, 03:49 PM

monitoring — A fix has been implemented and we are monitoring the results.

Mar 2, 02:42 PM

identified — The issue has been identified and a fix is being implemented.

+2 more updates

Elevated errors on claude.ai, console, and claude code

major

Mar 2, 11:49 AM→Mar 2, 03:47 PMresolved

Mar 2, 03:47 PM

resolved — This incident has been resolved.

Mar 2, 03:25 PM

monitoring — A fix has been implemented and we are monitoring the results.

Mar 2, 02:05 PM

identified — We are continuing to work on a fix for this issue.

+5 more updates

February 2026

Elevated errors on Claude Opus 4.6

minor

Feb 28, 06:09 PM→Feb 28, 06:34 PMresolved

Feb 28, 06:34 PM

resolved — 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

Feb 28, 06:09 PM

investigating — We are currently investigating this issue.

Elevated errors on claude.ai

major

Feb 28, 12:57 PM→Feb 28, 03:50 PMresolved

Feb 28, 03:50 PM

resolved — This incident has been resolved.

Feb 28, 01:07 PM

monitoring — A fix has been implemented and we are monitoring the results.

Feb 28, 12:57 PM

investigating — We are currently investigating this issue.

Sonnet 4.6 elevated error rate

minor

Feb 27, 07:31 PM→Feb 27, 07:43 PMresolved

Feb 27, 07:43 PM

resolved — This incident has been resolved.

Feb 27, 07:32 PM

investigating — We are currently investigating this issue.

Claude Desktop login issues

minor

Feb 27, 02:00 PM→Feb 27, 05:21 PMresolved

Feb 27, 05:21 PM

resolved — This incident has been resolved.

Feb 27, 05:21 PM

monitoring — We are continuing to monitor for any further issues.

Feb 27, 05:20 PM

monitoring — Some new logins to the Claude Desktop app were not working.

Elevated errors on claude.ai

major

Feb 27, 01:14 PM→Feb 27, 05:17 PMresolved

Feb 27, 05:17 PM

resolved — This incident has been resolved.

Feb 27, 01:41 PM

monitoring — A fix has been implemented and we are monitoring the results.

Feb 27, 01:14 PM

investigating — We are currently investigating this issue.

Outage in usage reporting

none

Feb 26, 03:56 PM→Feb 27, 02:23 PMresolved

Feb 27, 02:23 PM

resolved — 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 issu...

Feb 27, 03:04 AM

monitoring — 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 ...

Feb 26, 10:10 PM

identified — 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

+3 more updates

Elevated errors on claude.ai

major

Feb 27, 12:59 PM→Feb 27, 01:12 PMresolved

Feb 27, 01:12 PM

resolved — This incident has been resolved.

Feb 27, 12:59 PM

investigating — We are currently investigating this issue.

Claude Code showing "JSON Parse error: Unexpected EOF" and writing excessive files on Windows

minor

Feb 26, 07:57 PM→Feb 26, 11:07 PMresolved

Feb 26, 11:07 PM

resolved — We've confirmed this issue is resolved in Claude Code v2.1.61. Run `claude update` for the latest.

Feb 26, 10:43 PM

monitoring — 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, e...

Feb 26, 09:06 PM

identified — We are continuing to work on deploying a hotfix for this issue.

+1 more updates

Claude Desktop failing to open for some users

minor

Feb 25, 04:23 PM→Feb 25, 11:54 PMresolved

Feb 25, 11:54 PM

resolved — 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.

Feb 25, 05:58 PM

monitoring — 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.

Feb 25, 05:30 PM

identified — We continue to work on getting a fix deployed as quickly as possible.

+3 more updates

Elevated errors on Claude Opus 4.6

major

Feb 25, 07:15 PM→Feb 25, 07:37 PMresolved

Feb 25, 07:37 PM

resolved — This incident has been resolved.

Feb 25, 07:33 PM

monitoring — A fix has been implemented and we are monitoring the results.

Feb 25, 07:15 PM

investigating — We are currently investigating this issue.

Elevated error rates across multiple models

major

Feb 25, 05:15 PM→Feb 25, 05:46 PMresolved

Feb 25, 05:46 PM

resolved — This incident has been resolved.

Feb 25, 05:21 PM

investigating — We are continuing to investigate this issue.

Feb 25, 05:21 PM

investigating — We are continuing to investigate this issue.

+1 more updates

Elevated errors on Claude Sonnet 4.6 and Opus 4.6

minor

Feb 25, 01:58 PM→Feb 25, 04:22 PMresolved

Feb 25, 04:22 PM

resolved — This incident has been resolved.

Feb 25, 03:42 PM

monitoring — A fix has been implemented and we are monitoring the results.

Feb 25, 03:02 PM

investigating — We are continuing to investigate this issue.

+1 more updates

Elevated errors on Claude Sonnet 4.6

minor

Feb 24, 12:22 PM→Feb 24, 01:26 PMresolved

Feb 24, 01:26 PM

resolved — As of 5:10 PT / 13:10 UTC errors are back to baseline.

Feb 24, 01:00 PM

investigating — Previously this incident named Sonnet 4.5 as the affected model. This is a mistake and the model affected is Sonnet 4.6. Sorry.

Feb 24, 12:22 PM

investigating — We are currently investigating this issue.

Intermittent errors in skills-related functionality

minor

Feb 17, 08:15 PM→Feb 24, 11:51 AMresolved

Feb 24, 11:51 AM

resolved — This incident has been resolved.

Feb 22, 10:45 PM

identified — The issue has been identified and a fix is being implemented.

Feb 18, 12:30 AM

investigating — We are continuing to investigate this issue.

+1 more updates

Related Incident Histories

Get Anthropic (Claude) Outage Alerts

Be the first to know when Anthropic (Claude) go down.