Looking for an update now? Check the current status, or follow Anthropic (Claude) for future changes.
64.9%of 37 verified observed days had no reported provider issue
90-Day Trend
Dashed calendar markers below identify legacy observations whose source-at-observation was not recorded.
Monthly Status Summary
Month
Issue-free days
Days Tracked
Days with issues
September 2026
63.3%
30
11
This percentage summarizes normalized provider-status observations by calendar day. It is not duration-based, component-weighted, or contractual uptime. See the methodology and limitations.
Recorded Daily Status (Last 91 Days)
Jul 2Today
Legacy observation Operational Degraded Partial Outage Major Outage Maintenance No Data
Incident History
September 2026
Degraded performance on platform.claude.com and Claude for Microsoft Office 365
We are seeing success rates recover across affected services. Core inference and the API are not impacted.
investigating
We are investigating reports of degraded performance affecting some Claude services, including docs.claude.com. We are working to resolve these issues and will provide an update as soon as possible.
Degraded performance on Claude for Microsoft Office 365
We are investigating reports of degraded performance affecting Claude in Slack, Claude Code on the web, and Code Review. We will provide an update as soon as possible.
A mitigation has been applied for the issue affecting Claude Cowork and Claude Code on the web, and we are monitoring for recovery. Sessions that disconnected earlier can be retried
identified
We have identified an issue with an upstream cloud provider affecting Claude Cowork and Claude Code on the web. Some sessions may fail to start or disconnect mid-task; affected sessions can be retried. We are in contact with the provider and will provide an update as soon as possible.
Legacy Incident Archive
206 archived records restored. These records predate source-at-observation attestation. They are shown as historical ServiceAlert records only and do not establish a provider-reported incident, resolution, duration, or current active state.
July 2026
Elevated errors for Claude Opus 4.8
minorSource not attested
Last archived state: resolved
View archived record details
investigating
We are currently investigating this issue.
Elevated errors for Claude Opus 4.8
majorSource not attested
Last archived state: resolved
View archived record details
investigating
We are investigating elevated errors on requests to Claude Opus 4.8. We will provide an update as soon as possible.
Degraded performance for Claude Code on the web, Cowork Remote, Claude Tag, and Claude Code Review sessions
minorSource not attested
Last archived state: resolved
View archived record details
monitoring
A fix has been implemented and we are monitoring the results.
investigating
We are currently investigating a performance issue affecting features such as Claude Code on the Web (claude.ai/code), Claude Code Review, Cowork Remote, Claude Tag, and document creation in claude.ai. Our team is working on mitigating this issue.
Elevated errors on multiple models
minorSource not attested
Last archived state: resolved
View archived record details
identified
We are continuing to work to fully resolve errors impacting some requests, and will provide an additional update as soon as possible.
monitoring
At this time, success rates have recovered across impacted models and we are monitoring closely to ensure no further issues occur.
identified
We have identified an issue causing elevated errors on requests to some models, and our team is working to resolve this issue as quickly as possible. We will provide an additional update shortly.
investigating
We are currently investigating this issue.
Elevated errors on Claude Sonnet 5
minorSource not attested
Last archived state: resolved
View archived record details
investigating
We are currently investigating this issue.
Elevated errors for some models
majorSource not attested
Last archived state: resolved
View archived record details
monitoring
We are continuing to monitor issues affecting requests to some models, and have once again seen success rates return to normal. We are working to ensure there are no further issues, and will provide an additional update shortly.
identified
We are continuing to work to resolve an issue resulting in elevated errors on requests to some models, primarily Claude Fable 5. We will provide an additional update as soon as possible.
identified
We have seen success rates return to normal, but we are continuing to work to fully resolve this issue and ensure no further recurrences.
investigating
We are investigating elevated errors on requests to some models. We will provide an update as soon as possible.
Elevated errors on Claude Sonnet 5
minorSource not attested
Last archived state: resolved
View archived record details
investigating
We are currently investigating this issue.
Claude Tag seeing elevated GitHub operation failures
minorSource not attested
Last archived state: resolved
View archived record details
investigating
Our team has made some changes to update the load to GitHub, that we think will reduce this error rate.
investigating
We are currently investigating elevated error rates on calls made Claude Tag. Our team is actively working to identify the root cause. You may experience errors such as GitHub operations denied.
Elevated errors on Claude.ai
criticalSource not attested
Last archived state: resolved
View archived record details
monitoring
We have applied a fix, and at this time are seeing recovery of Claude.ai and related services such as OAuth log-in for Claude Code.
investigating
We have identified and are working to resolve an issue impacting Claude.ai. An additional impact of the ongoing issue is the inability to log-in via Claude.ai OAuth for Claude Code. We will provide an additional update as soon as possible.
investigating
We are investigating elevated errors on Claude.ai, and will provide an update as soon as possible.
