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Claude AI Cowork feature fails to allow internet access for users

Users of Anthropic's Claude AI are experiencing issues with the "Cowork" feature, where the "Allow outbound network traffic" setting to "All domains" is not being honored. Despite the setting being enabled and confirmed in the UI, network requests from the sandbox environment are consistently being blocked with a 403 Forbidden error. This behavior suggests the sandbox is defaulting to a more restrictive "Package managers only" setting, regardless of the user's configuration. The problem appears to be account-wide and affects both cloud sessions and local Cowork instances, with users seeking clarification on whether the "All domains" setting is functional for individuals and how to potentially resolve it. AI

IMPACT Users may be unable to leverage the full capabilities of Claude's Cowork feature for development tasks.

RANK_REASON User-reported issue with a specific feature of an AI product.

Read on r/ClaudeAI →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Claude AI Cowork feature fails to allow internet access for users

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5 / 100
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Tool
User-reported issue with a specific feature of an AI product.
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Breaking (< 6h)
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COVERAGE [1]

  1. r/ClaudeAI TIER_2 English(EN) · /u/Easy-Flan-1698 ·

    Cowork: "Allow network egress → All domains" is set, but the sandbox 403s every host. Anyone got this to actually apply?

    <!-- SC_OFF --><div class="md"><p>Individuals plan, Windows desktop app, Cowork cloud session. I use it to work on my own PHP site — read the live pages, run lint, deploy changes. It worked fine until a few days ago. Now the sandbox can't reach anything at all.</p> <p><strong>My …