Preflight Checklist
What's Wrong?
Product: Claude Cowork desktop app (NOT Claude Code CLI)
The Cowork bash workspace has been completely broken for 36+ hours with the following errors:
Error Day 1:
no space left on device
failed to mount virtiofs-root
Session: confident-adoring-knuth
Error Day 2:
useradd exit 12 — cannot create directory /sessions/eager-elegant-lamport
Session: eager-elegant-lamport
Two different session names, same underlying error = host VM disk is full, not account-specific.
Account: [email protected]
Support Conversation ID: 215474133856461
Duration: 36+ hours, persists across all new sessions and PC restarts
Impact: All automated Python jobs stopped (email processing, ecoDMS classification)
Email support only reaches bot (Fin) which cannot escalate this infrastructure issue.
What Should Happen?
The Cowork bash workspace should initialize successfully. Bash commands should execute without "no space left on device" errors.
Error Messages/Logs
OSError: [Errno 28] No space left on device
failed to mount virtiofs-root: exit status 1
Session names: confident-adoring-knuth, eager-elegant-lamport
Both sessions fail identically — this is a host VM infrastructure issue, not user-specific.
Steps to Reproduce
N/A — This is a Cowork desktop app infrastructure issue, not a Claude Code CLI issue.
The bash workspace fails immediately upon opening any new Cowork session.
No user action required to reproduce — the host VM disk is full on Anthropic's infrastructure side.
Account: [email protected]
Affected sessions: confident-adoring-knuth, eager-elegant-lamport
Claude Model
None
Is this a regression?
Yes, this worked in a previous version
Last Working Version
No response
Claude Code Version
N/A - this is a Cowork issue, not Claude Code
Platform
Anthropic API
Operating System
Windows
Terminal/Shell
Windows Terminal
Additional Information
No response
Preflight Checklist
What's Wrong?
Product: Claude Cowork desktop app (NOT Claude Code CLI)
The Cowork bash workspace has been completely broken for 36+ hours with the following errors:
Error Day 1:
Error Day 2:
Two different session names, same underlying error = host VM disk is full, not account-specific.
Account: [email protected]
Support Conversation ID: 215474133856461
Duration: 36+ hours, persists across all new sessions and PC restarts
Impact: All automated Python jobs stopped (email processing, ecoDMS classification)
Email support only reaches bot (Fin) which cannot escalate this infrastructure issue.
What Should Happen?
The Cowork bash workspace should initialize successfully. Bash commands should execute without "no space left on device" errors.
Error Messages/Logs
OSError: [Errno 28] No space left on device failed to mount virtiofs-root: exit status 1 Session names: confident-adoring-knuth, eager-elegant-lamport Both sessions fail identically — this is a host VM infrastructure issue, not user-specific.Steps to Reproduce
N/A — This is a Cowork desktop app infrastructure issue, not a Claude Code CLI issue.
The bash workspace fails immediately upon opening any new Cowork session.
No user action required to reproduce — the host VM disk is full on Anthropic's infrastructure side.
Account: [email protected]
Affected sessions: confident-adoring-knuth, eager-elegant-lamport
Claude Model
None
Is this a regression?
Yes, this worked in a previous version
Last Working Version
No response
Claude Code Version
N/A - this is a Cowork issue, not Claude Code
Platform
Anthropic API
Operating System
Windows
Terminal/Shell
Windows Terminal
Additional Information
No response