We have identified an issue affecting organizations that restrict GitHub access by source IP address. A recent infrastructure change altered the IP addresses Anthropic uses for outbound connections to GitHub, which may cause Claude Code remote sessions, GitHub Enterprise plugin syncing, and Claude Security to fail. We are reverting the change to restore the previous IP ranges; no allowlist changes will be needed on your side. We will post an update once the fix is deployed.
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Update: Continuing investigation Our investigation continues with support from independent external security partners. We continue to find no evidence of unauthorised access to customer data or Intercom accounts. All Intercom services remain fully operational. You are only potentially affected if your developers installed intercom-client@7.0.4 (npm) or intercom-php@5.0.2 during the affected window on April 30. The compromised package versions (intercom-client@7.0.4 and intercom-php@5.0.2) remain removed. Safe versions: intercom-client@7.0.3 and intercom-php@5.0.1. If you do not use these developer packages to interact with the Intercom REST API, you are not impacted. We are keeping this incident open while we complete our remediation and investigation. We will update this page when we are ready to close it out.
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Title: Some users may not receive results when performing searches in SharePoint Online User impact: Users may not receive results when performing searches in SharePoint Online. Current status: We're continuing our efforts to redirect and rebalance traffic within the subset of affected infrastructure while optimizing the amount of new search requests that our service can handle to remediate the impact. We'll monitor the efficacy of these remediation strategies over the next 24 hours, after which we'll reach out to a subset of affected users to validate whether this issue is resolved or additional mitigative actions may be required. Scope of impact: Some users attempting to perform searches in SharePoint Online may be impacted by this event. This section may be updated as our investigation continues. Start time: Monday, April 20, 2026, at 12:00 AM UTC Root cause: An unexpected increase in request traffic and search request queuing is causing a subset of service infrastructure that processes SharePoint Online search requests to enter a suboptimal state, resulting in impact. Next update by: Thursday, May 07, 2026, at 7:00 PM UTC
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Connection failures for organizations restricting GitHub access by IP address
Claude
Some users may not receive results when performing searches in SharePoint Online
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