Is Claude Cowork down? › Outage history
Claude Cowork outage history
Claude Cowork published 37 incidents on its official status page since Jul 27, 2026, 2 of them rated at the highest impact level. 11 were major or long incidents with their own pages; the biggest are listed first. Below them is every smaller incident, then our own 90 day check history.
Biggest Claude Cowork outages
Ranked by the official impact level, then by how long they lasted. Each has its own page with the cause, the fix time and every official update.
- Jul 29, 2026: Elevated errors across all models 2 hours 47 min · rated "Critical" · shared with Claude
- Aug 16, 2026: Service disruption on Claude services 36 minutes · rated "Critical" · shared with Claude
- Sep 10, 2026: Degraded functionality for Claude Cowork on Windows 4 days 3 hours · rated "Major"
- Jul 30, 2026: Elevated errors across many models 4 hours 51 min · rated "Major" · shared with Claude
- Aug 24, 2026: Elevated errors for multiple models 3 hours 24 min · rated "Major" · shared with Claude
- Sep 3, 2026: Elevated errors for multiple models 2 hours 57 min · rated "Major" · shared with Claude
- Sep 22, 2026: Elevated errors for multiple models 1 hour 38 min · rated "Major" · shared with Claude
- Aug 13, 2026: Elevated errors for Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5 1 hour 35 min · rated "Major" · shared with Claude
- Aug 14, 2026: Service disruption on Claude services 1 hour 28 min · rated "Major" · shared with Claude
- Sep 15, 2026: Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1 1 hour 26 min · rated "Major" · shared with Claude
More major and long Claude Cowork incidents
- Aug 4, 2026, 20:48 UTC: Elevated errors across many models 1 hour 11 min, rated "Major"
Every smaller Claude Cowork incident
Minor and short incidents from the Claude status page, newest first, each with a line from the official updates. Times are UTC.
October 2026
Oct 22, 2026, 03:50 UTC · Elevated errors affecting Connectors
4 hours 17 min · rated "Minor"
"The issue affecting claude.ai and Claude Cowork has been resolved."
Oct 21, 2026, 19:49 UTC · Degraded performance for Claude Fable 5
40 minutes · rated "Minor"
"The issue affecting other Claude models has been resolved."
Oct 6, 2026, 12:24 UTC · Elevated errors for Claude Opus 5.5
19 minutes · rated "Major"
"The issue affecting Claude Opus 5.5 has been resolved."
Oct 5, 2026, 13:05 UTC · Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1
16 minutes · rated "Major"
"The issue affecting Claude Mythos 5.1 and Claude Fable 5.1 has been resolved. Impact occurred from 05:40 PT / 12:40 UTC to 06:10 PT / 13:10 UTC."
September 2026
Sep 29, 2026, 14:21 UTC · Elevated errors on claude.ai, Claude Code, Claude Cowork and the Claude API
2 hours 6 min · rated "Major"
"The issue affecting Claude.ai, the Claude desktop and mobile apps, Claude Code, Claude Cowork, and the Claude API has been resolved, and services have been operating normally since recovery."
Sep 11, 2026, 14:19 UTC · Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1
17 minutes · rated "Major"
"The issue affecting Claude services has been resolved. Impact occurred from 13:57 to 14:20 UTC"
Sep 10, 2026, 21:43 UTC · Elevated latency on the Claude API for some users
1 hour 41 min · rated "Minor"
"The issue affecting Claude services has been mitigated."
Sep 3, 2026, 12:37 UTC · Elevated errors for Claude Sonnet 5
19 minutes · rated "Major"
"We are investigating elevated errors on requests to Claude Sonnet 5. We will provide an update as soon as possible."
Sep 2, 2026, 21:17 UTC · Elevated errors for Claude Sonnet 5
26 minutes · rated "Major"
"The issue affecting Claude Sonnet 5 has been resolved. Impact occurred from 2:05pm PT / 21:05 UTC to 2:19pm PT / 21:19 UTC."
August 2026
Aug 28, 2026, 17:22 UTC · Elevated errors on Claude Code and Claude Cowork
2 hours 59 min · rated "Major"
"The issue affecting Claude Cowork and Claude Code on the web has been resolved."
Aug 24, 2026, 20:11 UTC · Issues logging into Claude.ai
15 minutes · rated "Minor"
"This issue has been resolved."
Aug 20, 2026, 19:16 UTC · Elevated errors on requests to multiple models
26 minutes · rated "Major"
"This issue has been resolved."
Aug 20, 2026, 18:32 UTC · Elevated errors on Google connectors
29 minutes · rated "Minor"
"This issue has been resolved."
Aug 19, 2026, 09:42 UTC · Degraded performance for Claude Opus 5 and Claude Haiku 4.5
1 hour 20 min · rated "Minor"
"We have identified the cause of elevated errors on requests to Claude Opus 5 and Claude Haiku 4.5 and are working on a fix. We will provide an update as soon as possible."
Aug 18, 2026, 16:20 UTC · Degraded performance for multiple models
2 hours 41 min · rated "Minor"
"The issue affecting Claude Opus 5 has been resolved. Impact occurred from 16:11 to 18:23 UTC."
Aug 17, 2026, 13:56 UTC · Degraded performance for Claude Opus 5, Claude Sonnet 5
1 hour 33 min · rated "Minor"
"We are investigating elevated errors on requests to Claude Opus 5. We will provide an update as soon as possible."
Aug 14, 2026, 00:36 UTC · Service disruption on Claude Code on the web and related services
15 minutes · rated "Minor"
"The issue affecting Claude services has been resolved. Impact occurred from 23:42 to 00:50 UTC."
Aug 12, 2026, 13:50 UTC · Degraded performance for multiple models
4 hours 17 min · rated "Minor"
"This issue has been resolved."
Aug 5, 2026, 13:51 UTC · Degraded performance for Claude Opus 5
43 minutes · rated "Minor"
"We have identified the cause of elevated errors on requests to Claude Opus 5 and are working on a fix. We will provide an update as soon as possible."
Aug 5, 2026, 07:05 UTC · Degraded performance of multiple models
7 hours 9 min · rated "Minor"
"We are continuing to work on a fix for this issue."
Aug 3, 2026, 15:13 UTC · Degraded performance on Claude Sonnet 5
15 minutes · rated "Minor"
"As of 15:20 UTC (8:20am PT), error rates on Claude Sonnet 5 have returned to baseline. This incident is resolved."
Aug 3, 2026, 12:52 UTC · Error rates across multiple models
1 hour 24 min · rated "Minor"
"A fix has been implemented and we are monitoring the results."
July 2026
Jul 31, 2026, 06:18 UTC · Degraded performance on Claude Sonnet 5
47 minutes · rated "Minor"
"This incident has been resolved."
Jul 30, 2026, 13:43 UTC · Degraded performance on Claude Opus 4.8
41 minutes · rated "Minor"
"This incident has been resolved."
Jul 27, 2026, 13:39 UTC · Elevated errors on Claude Opus 5 and Haiku 4.5
57 minutes · rated "Minor"
"As of 7:34 PST / 14:34 UTC the errors have returned to baseline."
Jul 27, 2026, 11:27 UTC · Elevated errors on Claude Opus 5
1 hour 3 min · rated "Minor"
"As of 4:47 PST / 11:47 UTC the errors have returned to baseline."
Claude Cowork uptime, last 90 days
Tracked since Oct 7, 2026. Updated Oct 22, 2026, 12:35 UTC.
Every Claude Cowork problem in the last 90 days
- Degraded
Elevated errors affecting Connectors
Oct 22, 2026, 04:05 UTC · lasted 4 hours 16 min · from Claude Cowork's official status page
- Degraded
Degraded performance for Claude Fable 5
Oct 21, 2026, 19:49 UTC · lasted 48 minutes · from Claude Cowork's official status page
Day by day
| Day (UTC) | Uptime | Avg response | Worst |
|---|---|---|---|
| Oct 22, 2026 | 100% | 83 ms | Degraded |
| Oct 21, 2026 | 100% | 126 ms | Degraded |
| Oct 20, 2026 | 100% | 124 ms | Up |
| Oct 19, 2026 | 100% | 126 ms | Up |
| Oct 18, 2026 | 100% | 127 ms | Up |
| Oct 17, 2026 | 100% | 124 ms | Up |
| Oct 16, 2026 | 100% | 227 ms | Up |
| Oct 15, 2026 | 100% | 251 ms | Up |
| Oct 14, 2026 | 100% | 259 ms | Up |
| Oct 13, 2026 | 100% | 259 ms | Up |
| Oct 12, 2026 | 100% | 251 ms | Up |
| Oct 11, 2026 | 100% | 208 ms | Up |
| Oct 10, 2026 | 100% | 138 ms | Up |
| Oct 9, 2026 | 100% | 146 ms | Up |
| Oct 8, 2026 | 100% | 148 ms | Up |
| Oct 7, 2026 | 100% | 134 ms | Up |
Claude Cowork outage questions
Was Claude Cowork down today?
Yes. Claude Cowork had a problem today (Oct 22, 2026, UTC): Elevated errors affecting Connectors (degraded, 4 hours 16 min).
Was Claude Cowork down yesterday?
Yes. Claude Cowork had a problem yesterday (Oct 21, 2026, UTC): Degraded performance for Claude Fable 5 (degraded, 48 minutes).
When was Claude Cowork last down?
The latest problem was on Oct 22, 2026, 04:05 UTC and lasted 4 hours 16 min: Elevated errors affecting Connectors.
What was the biggest Claude Cowork outage?
Of the incidents on record since Jul 27, 2026, the biggest was on Jul 29, 2026: Elevated errors across all models. The Claude status page rated it "Critical" and it lasted 2 hours 47 min.
How often does Claude Cowork go down?
Claude Cowork's status page posted 37 incidents since Jul 27, 2026, 5 of them in the last 30 days. Most incidents affect part of the service, not all of it. Uptime from our own checks over the last 90 days: 100%.
Times are UTC. Official incidents are the company's own posts, quoted from the Claude status page. Problem periods start when the official status page or our checks first show a problem and end when the service is next found working, so durations are accurate to within a few minutes. Recent outages across all services.