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claude-code - 💡(How to fix) Fix [BUG] Cowork "Virtualization is not available" on Windows 11 — ThinkPad E14 G14, Intel i5-1335U, all virtualization features enabled [1 comments, 2 participants]

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anthropics/claude-code#51958•Fetched 2026-04-23 07:40:22
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Error Message

Error Messages/Logs

  1. Error appears immediately
  • Full clean uninstall + AppData deleted + fresh reinstall as Administrator — same error

Code Example

"Virtualization is not available — Claude's workspace requires Virtual Machine Platform, but the virtualization service isn't responding. Restart your computer to resolve this."
%APPDATA%\Claude\logs folder does not exist — VM never initializes.
RAW_BUFFERClick to expand / collapse

Preflight Checklist

  • I have searched existing issues and this hasn't been reported yet
  • This is a single bug report (please file separate reports for different bugs)
  • I am using the latest version of Claude Code

What's Wrong?

Cowork permanently shows "Virtualization is not available — Claude's workspace requires Virtual Machine Platform, but the virtualization service isn't responding." Restarting and reinstalling does not fix it. The %APPDATA%\Claude\logs folder is never created, meaning the VM never attempts to initialize.

What Should Happen?

Cowork should detect that virtualization is fully enabled and successfully start the VM workspace.

Error Messages/Logs

"Virtualization is not available — Claude's workspace requires Virtual Machine Platform, but the virtualization service isn't responding. Restart your computer to resolve this."
%APPDATA%\Claude\logs folder does not exist — VM never initializes.

Steps to Reproduce

  1. Install Claude Desktop as Administrator on Windows 11
  2. Open Claude Desktop and sign in
  3. Navigate to the Cowork tab
  4. Error appears immediately
  5. Restarting does not resolve it

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

No response

Claude Code Version

Latest version from claude.ai/download (Cowork - desktop app, not Claude Code CLI)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

  • VirtualMachinePlatform: Enabled via DISM (successful)
  • HypervisorPlatform: Enabled via DISM (successful)
  • bcdedit /set hypervisorlaunchtype auto: ran successfully
  • Full clean uninstall + AppData deleted + fresh reinstall as Administrator — same error
  • Regular Claude chat works perfectly, only Cowork is affected
  • Related issues: #27420, #32004, #45715, #50348

extent analysis

TL;DR

The issue is likely due to the virtualization service not responding, and a potential fix involves checking the system's virtualization settings and ensuring the Virtual Machine Platform is properly enabled.

Guidance

  • Verify that the Virtual Machine Platform is enabled in the Windows Features settings, in addition to being enabled via DISM.
  • Check the system's BIOS settings to ensure that virtualization is enabled at the hardware level.
  • Review the related issues (#27420, #32004, #45715, #50348) to see if any of the suggested solutions or workarounds apply to this case.
  • Consider running the command systeminfo in PowerShell to check for any virtualization-related issues or errors.

Example

No code snippet is provided as it is not clearly supported by the issue.

Notes

The issue may be specific to the Windows 11 operating system or the Anthropic API platform, and further investigation is needed to determine the root cause.

Recommendation

Apply workaround: Check and ensure that all virtualization settings are properly enabled, and review related issues for potential solutions. This is recommended because the issue is likely related to virtualization settings, and checking these settings is a straightforward and non-invasive step.

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claude-code - 💡(How to fix) Fix [BUG] Cowork "Virtualization is not available" on Windows 11 — ThinkPad E14 G14, Intel i5-1335U, all virtualization features enabled [1 comments, 2 participants]