Claude Code bug: requests blocked with HTTP 403 after switching to mobile network

serhiy-storchaka · ghdev · 2026-11-10

Issue #108761 on anthropics/claude-code: after switching from a landline to a mobile connection, a user's request failed with HTTP 403 "the network this request came from isn't allowed" — yet resending the same message immediately succeeded, with region and account unchanged. Submitting feedback also returned 403, forcing the user to file on GitHub instead. The report points to Anthropic's network-level filtering misfiring rather than a genuine region or VPN restriction.

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