# Anthropic in March 2026: incidents, uptime and changes

> Anthropic in March 2026: 51 incidents on its status page (21 major or critical), 84.67% free of major or critical incidents (vendor-reported), 1 CVE. From Rewindex’s archive of Anthropic’s status, pricing and policy pages.

Canonical: https://rewindex.com/company/anthropic/2026/03
Last updated: 2026-07-24T20:10:00Z

- Incidents posted: 51 (major/critical: 21) · Maintenance: 0
- By vendor impact label: critical 2, major 19, minor 29, none 1
- Uptime (vendor-reported): 84.67% free of major/critical incidents, 68.98% free of any incident; outage time 4.8 days, incident time 9.6 days
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 1
- Previous month: [February 2026](https://rewindex.com/company/anthropic/2026/02.md) · Next: [April 2026](https://rewindex.com/company/anthropic/2026/04.md) · [All months](https://rewindex.com/company/anthropic/reports.md) · [Anthropic](https://rewindex.com/company/anthropic.md)

_Uptime: Derived from the incidents the vendor posted on its own status page, not measured by us. A minute counts as an outage minute when a major or critical incident (as the vendor labelled it) was open; incident minutes include minor ones too. Maintenance and incidents marked "no impact" are left out, overlapping incidents are merged, a resolved incident counts for at most 7 days, and one still open with no resolution counts for at most 24 hours._

## Major and critical incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Elevated errors on Claude Opus 4.6](https://rewindex.com/company/anthropic/incidents/bf1hsq5gbm9b.md) | critical | 2026-03-19 15:59 UTC | 2026-03-19 16:16 UTC | 17 min | resolved |
| [Claude.ai and Claude login down](https://rewindex.com/company/anthropic/incidents/f4wqmj8rhjsc.md) | critical | 2026-03-22 18:31 UTC | 2026-03-22 18:51 UTC | 20 min | resolved |
| [Elevated errors on claude.ai, console, and claude code](https://rewindex.com/company/anthropic/incidents/0ghc53zpsfmt.md) | major | 2026-03-02 11:49 UTC | 2026-03-02 15:47 UTC | 4.0 h | resolved |
| [Elevated errors on Claude Haiku 4.5](https://rewindex.com/company/anthropic/incidents/s0pmy4yywshv.md) | major | 2026-03-03 14:51 UTC | 2026-03-03 15:39 UTC | 48 min | resolved |
| [Outage in Usage Reporting](https://rewindex.com/company/anthropic/incidents/p7nq2jdg4zwj.md) | major | 2026-03-03 16:49 UTC | 2026-03-04 08:32 UTC | 16 h | resolved |
| [Claude Desktop app unresponsive](https://rewindex.com/company/anthropic/incidents/pqpgkf52p3tg.md) | major | 2026-03-08 17:57 UTC | 2026-03-10 16:52 UTC | 47 h | resolved |
| [Elevated errors on Claude Sonnet 4.6](https://rewindex.com/company/anthropic/incidents/tdp33ycsk4rb.md) | major | 2026-03-12 16:34 UTC | 2026-03-12 18:00 UTC | 1.4 h | resolved |
| [Elevated errors on Claude Opus 4.6 and Sonnet 4.6](https://rewindex.com/company/anthropic/incidents/q58b2gkv64pw.md) | major | 2026-03-13 18:37 UTC | 2026-03-13 21:27 UTC | 2.8 h | resolved |
| [Elevated errors on Claude Opus 4.6](https://rewindex.com/company/anthropic/incidents/mhnzmndv58bt.md) | major | 2026-03-17 19:47 UTC | 2026-03-18 00:25 UTC | 4.6 h | resolved |
| [Elevated errors on Claude Opus 4.6](https://rewindex.com/company/anthropic/incidents/s914kvccjthq.md) | major | 2026-03-18 06:41 UTC | 2026-03-18 09:45 UTC | 3.1 h | resolved |
| [Increased errors on Opus 4.6](https://rewindex.com/company/anthropic/incidents/0dvq4gvy5f5f.md) | major | 2026-03-18 12:30 UTC | 2026-03-18 13:58 UTC | 1.5 h | resolved |
| [Elevated errors on Claude.ai](https://rewindex.com/company/anthropic/incidents/p88wl8gmb05c.md) | major | 2026-03-18 15:16 UTC | 2026-03-18 16:05 UTC | 49 min | resolved |
| [Elevated errors across surfaces](https://rewindex.com/company/anthropic/incidents/6wlrxz9pqz8f.md) | major | 2026-03-19 00:28 UTC | 2026-03-19 01:38 UTC | 1.2 h | resolved |
| [Elevated error rates on Claude Opus and Sonnet 4.6](https://rewindex.com/company/anthropic/incidents/tj7zxr47cfx6.md) | major | 2026-03-21 00:07 UTC | 2026-03-21 01:42 UTC | 1.6 h | resolved |
| [Elevated errors on Claude Opus 4.6](https://rewindex.com/company/anthropic/incidents/9qwph3lqc885.md) | major | 2026-03-25 15:04 UTC | 2026-03-26 00:14 UTC | 9.2 h | resolved |
| [Elevated errors on Claude Opus 4.6 and Sonnet 4.6](https://rewindex.com/company/anthropic/incidents/vcp3jwhttwrg.md) | major | 2026-03-26 21:56 UTC | 2026-03-27 00:49 UTC | 2.9 h | resolved |
| [Elevated errors for MCP calls](https://rewindex.com/company/anthropic/incidents/zq248kgmyyyk.md) | major | 2026-03-26 22:25 UTC | 2026-03-26 22:41 UTC | 16 min | resolved |
| [Elevated error rates on Opus 4.6](https://rewindex.com/company/anthropic/incidents/b9802k1zb5l2.md) | major | 2026-03-27 06:59 UTC | 2026-03-27 16:46 UTC | 9.8 h | resolved |
| [Dispatch sessions not responding in Claude Desktop](https://rewindex.com/company/anthropic/incidents/q5qk1234v205.md) | major | 2026-03-29 00:53 UTC | 2026-03-29 04:44 UTC | 3.9 h | resolved |
| [Opus 4.6 and Sonnet 4.6 error rate elevated](https://rewindex.com/company/anthropic/incidents/65w1yxq40m3l.md) | major | 2026-03-31 19:41 UTC | 2026-03-31 22:09 UTC | 2.5 h | resolved |
| [Unavailable connectors in Claude.ai desktop applications](https://rewindex.com/company/anthropic/incidents/z5scppyhphjk.md) | major | 2026-03-31 20:12 UTC | 2026-03-31 22:59 UTC | 2.8 h | resolved |

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Elevated errors on claude.ai, console, and claude code](https://rewindex.com/company/anthropic/incidents/0ghc53zpsfmt.md) | major | 2026-03-02 11:49 UTC | 2026-03-02 15:47 UTC | 4.0 h | resolved |
| [Elevated errors on Claude Opus 4.6](https://rewindex.com/company/anthropic/incidents/5zg05jnrqmzg.md) | minor | 2026-03-02 14:35 UTC | 2026-03-02 15:50 UTC | 1.3 h | resolved |
| [Elevated errors on Claude Opus 4.6](https://rewindex.com/company/anthropic/incidents/0j8dkb38jymf.md) | minor | 2026-03-02 16:50 UTC | 2026-03-02 17:55 UTC | 1.1 h | resolved |
| [Elevated errors in claude.ai](https://rewindex.com/company/anthropic/incidents/63943gpfb97z.md) | minor | 2026-03-02 17:08 UTC | 2026-03-02 17:23 UTC | 15 min | resolved |
| [Elevated errors on Claude Haiku 4.5](https://rewindex.com/company/anthropic/incidents/vqnfq1179169.md) | minor | 2026-03-02 17:56 UTC | 2026-03-02 21:16 UTC | 3.3 h | resolved |
| [Elevated errors in claude.ai, cowork, platform, claude code](https://rewindex.com/company/anthropic/incidents/yf48hzysrvl5.md) | minor | 2026-03-03 03:15 UTC | 2026-03-03 10:18 UTC | 7.0 h | resolved |
| [Elevated errors on Claude Opus 4.6](https://rewindex.com/company/anthropic/incidents/kyj825w6vxr8.md) | minor | 2026-03-03 06:59 UTC | 2026-03-03 14:29 UTC | 7.5 h | resolved |
| [Elevated errors on Claude Haiku 4.5](https://rewindex.com/company/anthropic/incidents/s0pmy4yywshv.md) | major | 2026-03-03 14:51 UTC | 2026-03-03 15:39 UTC | 48 min | resolved |
| [Elevated errors on Claude Sonnet 4.6](https://rewindex.com/company/anthropic/incidents/v3j5tpfcr3dn.md) | minor | 2026-03-03 15:40 UTC | 2026-03-03 16:38 UTC | 58 min | resolved |
| [Outage in Usage Reporting](https://rewindex.com/company/anthropic/incidents/p7nq2jdg4zwj.md) | major | 2026-03-03 16:49 UTC | 2026-03-04 08:32 UTC | 16 h | resolved |
| [Elevated errors on Claude Opus 4.6](https://rewindex.com/company/anthropic/incidents/cvh0kqnmzjks.md) | minor | 2026-03-04 14:14 UTC | 2026-03-04 15:57 UTC | 1.7 h | resolved |
| [Elevated errors on Claude Haiku 4.5](https://rewindex.com/company/anthropic/incidents/4xx67ythzxg5.md) | minor | 2026-03-04 14:47 UTC | 2026-03-04 14:55 UTC | 8 min | resolved |
| [Elevated errors on Claude Haiku 4.5](https://rewindex.com/company/anthropic/incidents/5dbf8slk8mhr.md) | minor | 2026-03-04 15:58 UTC | 2026-03-04 17:01 UTC | 1.1 h | resolved |
| [Elevated TCP three-way handshake failures on api.anthropic.com](https://rewindex.com/company/anthropic/incidents/htjkfrfnzq12.md) | minor | 2026-03-06 15:34 UTC | 2026-03-06 16:23 UTC | 49 min | resolved |
| [Filesystem connector missing from Claude Desktop](https://rewindex.com/company/anthropic/incidents/jbc4ybjk83c6.md) | minor | 2026-03-06 17:16 UTC | 2026-03-08 15:49 UTC | 47 h | resolved |
| [Elevated errors on Claude Haiku 4.5](https://rewindex.com/company/anthropic/incidents/qy1zsq4wwp1q.md) | minor | 2026-03-07 13:58 UTC | 2026-03-07 16:58 UTC | 3.0 h | resolved |
| [Claude Desktop app unresponsive](https://rewindex.com/company/anthropic/incidents/pqpgkf52p3tg.md) | major | 2026-03-08 17:57 UTC | 2026-03-10 16:52 UTC | 47 h | resolved |
| [Elevated errors on Claude.ai (including login issues for Claude Code)](https://rewindex.com/company/anthropic/incidents/jm3b4jjy2jrt.md) | minor | 2026-03-11 14:44 UTC | 2026-03-11 17:28 UTC | 2.7 h | resolved |
| [Elevated errors on Sonnet 4.6](https://rewindex.com/company/anthropic/incidents/gtj167mtk9pg.md) | minor | 2026-03-12 15:42 UTC | 2026-03-12 15:48 UTC | 6 min | resolved |
| [Elevated errors on Claude Sonnet 4.6 and on Claude.ai](https://rewindex.com/company/anthropic/incidents/28hx7gp8hnzw.md) | minor | 2026-03-12 16:07 UTC | 2026-03-12 16:28 UTC | 21 min | resolved |
| [Elevated errors on Claude Sonnet 4.6](https://rewindex.com/company/anthropic/incidents/tdp33ycsk4rb.md) | major | 2026-03-12 16:34 UTC | 2026-03-12 18:00 UTC | 1.4 h | resolved |
| [Elevated errors on Claude Opus 4.6 and Sonnet 4.6](https://rewindex.com/company/anthropic/incidents/q58b2gkv64pw.md) | major | 2026-03-13 18:37 UTC | 2026-03-13 21:27 UTC | 2.8 h | resolved |
| [Elevated errors on Claude.ai](https://rewindex.com/company/anthropic/incidents/t2m389x6k1tq.md) | minor | 2026-03-16 12:01 UTC | 2026-03-16 12:36 UTC | 35 min | resolved |
| [Elevated errors on Claude.ai](https://rewindex.com/company/anthropic/incidents/81m3f5p97qkk.md) | minor | 2026-03-16 13:56 UTC | 2026-03-16 14:21 UTC | 25 min | resolved |
| [Elevated errors on Claude Sonnet 4.6](https://rewindex.com/company/anthropic/incidents/0266tzhrb7rn.md) | minor | 2026-03-16 14:02 UTC | 2026-03-16 16:35 UTC | 2.5 h | resolved |
| [Elevated errors on Claude Sonnet 4.6](https://rewindex.com/company/anthropic/incidents/66wxjy8wc8fx.md) | minor | 2026-03-17 08:04 UTC | 2026-03-17 13:03 UTC | 5.0 h | resolved |
| [Elevated errors on Claude Opus 4.6](https://rewindex.com/company/anthropic/incidents/h04m7sftmtk5.md) | minor | 2026-03-17 09:46 UTC | 2026-03-17 11:45 UTC | 2.0 h | resolved |
| [Elevated errors on Claude Sonnet 4.6](https://rewindex.com/company/anthropic/incidents/t252hkdgt81f.md) | minor | 2026-03-17 14:07 UTC | 2026-03-17 15:45 UTC | 1.6 h | resolved |
| [Elevated errors on Claude Opus 4.6](https://rewindex.com/company/anthropic/incidents/mhnzmndv58bt.md) | major | 2026-03-17 19:47 UTC | 2026-03-18 00:25 UTC | 4.6 h | resolved |
| [Elevated errors on Claude Opus 4.6](https://rewindex.com/company/anthropic/incidents/s914kvccjthq.md) | major | 2026-03-18 06:41 UTC | 2026-03-18 09:45 UTC | 3.1 h | resolved |
| [Increased errors on Opus 4.6](https://rewindex.com/company/anthropic/incidents/0dvq4gvy5f5f.md) | major | 2026-03-18 12:30 UTC | 2026-03-18 13:58 UTC | 1.5 h | resolved |
| [Elevated errors on Claude.ai](https://rewindex.com/company/anthropic/incidents/p88wl8gmb05c.md) | major | 2026-03-18 15:16 UTC | 2026-03-18 16:05 UTC | 49 min | resolved |
| [Elevated errors across surfaces](https://rewindex.com/company/anthropic/incidents/6wlrxz9pqz8f.md) | major | 2026-03-19 00:28 UTC | 2026-03-19 01:38 UTC | 1.2 h | resolved |
| [Elevated errors on Claude Sonnet 4.6](https://rewindex.com/company/anthropic/incidents/mfhmykgrbzt5.md) | minor | 2026-03-19 15:37 UTC | 2026-03-19 15:46 UTC | 9 min | resolved |
| [Elevated errors on Claude Opus 4.6](https://rewindex.com/company/anthropic/incidents/bf1hsq5gbm9b.md) | critical | 2026-03-19 15:59 UTC | 2026-03-19 16:16 UTC | 17 min | resolved |
| [Elevated error rates on Claude Opus and Sonnet 4.6](https://rewindex.com/company/anthropic/incidents/tj7zxr47cfx6.md) | major | 2026-03-21 00:07 UTC | 2026-03-21 01:42 UTC | 1.6 h | resolved |
| [Delayed response completion on Claude.ai](https://rewindex.com/company/anthropic/incidents/cjwz4sx4pl5j.md) | minor | 2026-03-22 11:14 UTC | 2026-03-22 13:13 UTC | 2.0 h | resolved |
| [Claude.ai and Claude login down](https://rewindex.com/company/anthropic/incidents/f4wqmj8rhjsc.md) | critical | 2026-03-22 18:31 UTC | 2026-03-22 18:51 UTC | 20 min | resolved |
| [Elevated errors on Claude.ai \[retroactive\]](https://rewindex.com/company/anthropic/incidents/0kxm85c9w7rw.md) | minor | 2026-03-23 17:03 UTC | 2026-03-23 17:10 UTC | 7 min | resolved |
| [Elevated errors on Claude Opus 4.6](https://rewindex.com/company/anthropic/incidents/yvb76l3ryzpb.md) | minor | 2026-03-25 09:35 UTC | 2026-03-25 13:10 UTC | 3.6 h | resolved |
| [Elevated Errors on claude.ai](https://rewindex.com/company/anthropic/incidents/9rt6y2y4gkh1.md) | none | 2026-03-25 13:45 UTC | 2026-03-25 15:43 UTC | 2.0 h | resolved |
| [Elevated connection reset errors in Cowork](https://rewindex.com/company/anthropic/incidents/d8r794mwjg8d.md) | minor | 2026-03-25 14:33 UTC | 2026-03-27 15:05 UTC | 2 d | resolved |
| [Elevated errors on Claude Opus 4.6](https://rewindex.com/company/anthropic/incidents/9qwph3lqc885.md) | major | 2026-03-25 15:04 UTC | 2026-03-26 00:14 UTC | 9.2 h | resolved |
| [Elevated errors on Claude Opus 4.6 and Sonnet 4.6](https://rewindex.com/company/anthropic/incidents/vcp3jwhttwrg.md) | major | 2026-03-26 21:56 UTC | 2026-03-27 00:49 UTC | 2.9 h | resolved |
| [Elevated errors for MCP calls](https://rewindex.com/company/anthropic/incidents/zq248kgmyyyk.md) | major | 2026-03-26 22:25 UTC | 2026-03-26 22:41 UTC | 16 min | resolved |
| [Elevated error rates on Opus 4.6](https://rewindex.com/company/anthropic/incidents/b9802k1zb5l2.md) | major | 2026-03-27 06:59 UTC | 2026-03-27 16:46 UTC | 9.8 h | resolved |
| [Elevated errors on Opus 4.6 Fast Mode](https://rewindex.com/company/anthropic/incidents/pgxwhv06t0y8.md) | minor | 2026-03-28 13:01 UTC | 2026-03-28 14:53 UTC | 1.9 h | resolved |
| [Dispatch sessions not responding in Claude Desktop](https://rewindex.com/company/anthropic/incidents/q5qk1234v205.md) | major | 2026-03-29 00:53 UTC | 2026-03-29 04:44 UTC | 3.9 h | resolved |
| [Elevated errors on Claude Opus 4.6](https://rewindex.com/company/anthropic/incidents/k3z0fjwdjkzl.md) | minor | 2026-03-31 08:53 UTC | 2026-03-31 09:44 UTC | 51 min | resolved |
| [Opus 4.6 and Sonnet 4.6 error rate elevated](https://rewindex.com/company/anthropic/incidents/65w1yxq40m3l.md) | major | 2026-03-31 19:41 UTC | 2026-03-31 22:09 UTC | 2.5 h | resolved |
| [Unavailable connectors in Claude.ai desktop applications](https://rewindex.com/company/anthropic/incidents/z5scppyhphjk.md) | major | 2026-03-31 20:12 UTC | 2026-03-31 22:59 UTC | 2.8 h | resolved |

## CVEs published

- [CVE-2026-22561](https://rewindex.com/cve/CVE-2026-22561.md)  (CVSS 7.8), published 2026-03-31

## Cite this

Anthropic posted 51 status incidents in March 2026 (21 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/anthropic/2026/03
- Citation: Anthropic, “Anthropic in March 2026” (2026-03-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/anthropic/2026/03 (CC BY 4.0).
- Markdown link: `[Anthropic: Anthropic in March 2026 (2026-03-01)](https://rewindex.com/company/anthropic/2026/03)`


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Canonical: https://rewindex.com/company/anthropic/2026/03 · Markdown: https://rewindex.com/company/anthropic/2026/03.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T14:35:43.460Z