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Nearest release: v2.1.322, published 19 hours before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Upstream edited this page at 10 Nov 2026 21:55 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 10 Nov 2026 22:07 UTC.

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22152215This error is not a client-side network problem. Cloud sessions and [cloud scheduled tasks](https://code.claude.com/docs/en/routines.md) run inside a sandboxed VM whose outbound traffic through the session's network is filtered to the [cloud environment's](https://code.claude.com/docs/en/cloud-environments.md) allowlist:
22162216 
22172217* **GitHub and connector traffic**: [GitHub operations](https://code.claude.com/docs/en/cloud-environments.md#github-proxy) and MCP connector traffic use separate channels, which is why they can keep working while other hosts are blocked
2218* **Default environment**: the **Default** environment uses **Trusted** access, which permits the [default allowlist](https://code.claude.com/docs/en/cloud-environments.md#default-allowed-domains) of package registries, cloud provider APIs, container registries, and common development domains and blocks other domains on that path
2218* **Default environment**: the **Default** environment uses **Limited** access with **Allow package managers** checked. Its sessions reach the [default allowlist](https://code.claude.com/docs/en/cloud-environments.md#default-allowed-domains) of package registries, cloud provider APIs, container registries, and common development domains.
22192219 
22202220**What to do:**
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22222222These steps change one of your own environments. An [organization-shared environment](https://code.claude.com/docs/en/cloud-environments.md#organization-shared-environments) opens read-only in the selector, so ask an Owner to change its network access from the **Cloud environments** page in [admin settings](https://claude.ai/admin-settings).
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22242224* Open your environment for editing, either from the [cloud scheduled task's form](https://code.claude.com/docs/en/routines.md#environments-and-network-access) or from the [environment selector](https://code.claude.com/docs/en/cloud-environments.md#configure-your-environment) where you start cloud sessions.
2225* In the **Edit cloud environment** dialog, change **Network access** from **Trusted** to **Custom**, then add the blocked domain to **Allowed domains**. Enter one domain per line. Check **Also include default list of common package managers** to keep the [default allowlist](https://code.claude.com/docs/en/cloud-environments.md#default-allowed-domains) alongside your custom domains. Select **Full** instead if you want unrestricted access.
2225* In the **Edit cloud environment** dialog, select **Limited** under **Network access**, then add the blocked domain to **Allowed domains**. Enter one domain per line. Check **Allow package managers** to allow the [default allowlist](https://code.claude.com/docs/en/cloud-environments.md#default-allowed-domains) alongside your own domains. Select **Full** instead if you want unrestricted access.
22262226* Click **Save changes**. The next run uses the updated allowlist. For a cloud session that's already open, see [when a network access change reaches existing sessions](https://code.claude.com/docs/en/cloud-environments.md#network-access).
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22282228See [Network access](https://code.claude.com/docs/en/cloud-environments.md#network-access) for access levels and the default allowlist. Local CLI sessions are not affected by this policy.
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24922492**What to do:**
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24942494* **After a compaction-window warning**: in a multi-turn conversation, run `/compact` to summarize earlier turns and free space. To start fresh instead, run `/clear`.
2495* For more ways to reduce usage
2495* For more ways to reduce usage, see [Prompt is too long](#prompt-is
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