Users are reporting problems accessing Anthropic's Claude AI platform, with complaints emerging across Claude.ai and Claude Code on Friday, November 13. The disruption appears to be affecting user authentication, preventing some users from accessing the AI chatbot and its associated coding services.
According to Anthropic's official status page, the company is investigating elevated errors affecting Claude.ai, Claude Code and its developer platform, platform.claude.com. The company acknowledged the issue at 9:58 UTC (3:28 PM IST) and said it was looking into problems with users authenticating to Claude.ai and Claude Code. Anthropic has not yet provided an estimated timeline for restoring the affected services.
The disruption has also triggered a spike in user complaints on Downdetector, a platform that tracks service outages based on user-submitted reports. According to the outage-tracking website, reports concerning Claude AI increased sharply on Friday afternoon. The platform recorded 2,895 reports at around 3:45 PM, compared with a baseline of just two reports.
Which Claude services are affected?
Anthropic's status dashboard indicates that the disruption is not limited to its primary chatbot. Claude.ai has been marked as experiencing a major outage, while Claude Console (platform.claude.com) and Claude Code are reporting partial outages. Claude Cowork is also experiencing degraded performance.
However, Claude API continues to be listed as operational, suggesting that the disruption is not currently affecting all of Anthropic's services in the same way.
Microsoft 365 connector issue continues
Separately, Anthropic is also dealing with an ongoing issue affecting its Microsoft 365 connector. The company said the problem originated from a Microsoft 365 service incident, with mail, calendar and search tools continuing to fail for most requests. Claude for Outlook has also been affected.
In its latest update on November 12, Anthropic said it was working with Microsoft as the upstream provider restarted affected servers. The company has yet to announce a complete resolution to the connector-related disruption.
Anthropic is continuing to investigate the latest authentication problems and has said it will share further updates as more information becomes available.
