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Anthropic Cowork sandbox provisioning fails for users

By PulseAugur Editorial · [1 sources] ·

Users are reporting a critical issue with Anthropic's Cowork sandbox environment, where the provisioning process is failing. The error, "useradd failed: exit status 12," indicates a problem with creating user home directories, likely due to disk space or quota limitations on Anthropic's end. This prevents any code execution within the sandbox, rendering the Linux workspace unusable for affected users. AI

IMPACT Disrupts user workflows and access to development environments within Anthropic's platform.

RANK_REASON User-reported issue with a specific product feature (sandbox provisioning).

Read on r/Anthropic →

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

Anthropic Cowork sandbox provisioning fails for users

How we ranked this

Signal score
5 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
User-reported issue with a specific product feature (sandbox provisioning).
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
product, infra
Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
Story freshness
Breaking (< 6h)
Fresh story with cross-source coverage still developing. Ranking may shift as more sources report.

Full methodology in our editorial standards.

COVERAGE [1]

  1. r/Anthropic TIER_1 English(EN) · /u/amsquare ·

    Cowork sandbox provisioning fully broken; "useradd failed: exit status 12"

    <!-- SC_OFF --><div class="md"><p>Every bash call in my Cowork session fails before any of my code even runs.</p> <p>What I'm seeing:</p> <ul> <li>Error: <code>RPC error -1: ensure user: useradd failed: exit status 12: useradd: cannot create directory /sessions/...</code></li> <l…

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