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claude-code - 💡(How to fix) Fix [BUG] Cowork yukonSilver unsupported on HP ProDesk 600 G3 DM - Windows 10 Pro

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Error Message

Error Messages/Logs

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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?

When Claude desktop stats up, the Co-Work/Code options do not display on the top of the screen. I have worked with Claude to verify all systems and have attempted to solve it on my own computer. Claude stated the following:

Still yukonSilver not supported on every attempt. Hyper-V is fully enabled but Claude's own internal compatibility checker is still rejecting your system. This is beyond what we can fix through Windows settings alone. This is a bug that needs to be reported directly to Anthropic. Your system meets all the requirements:

Windows 10 Pro ✅ Hyper-V enabled ✅ Hypervisor running ✅ Physical hardware (not a VM) ✅ Paid Pro plan ✅

Yet Claude keeps flagging it as unsupported.

My system: Your system: HP ProDesk 600 G3 DM, i5-6500T, Windows 10 Pro 22H2 App version: 1.3109.0 The log line: yukonSilver not supported (status=unsupported) That Hyper-V is enabled and hypervisor is detected

What Should Happen?

The menu should appear. I am a paying subscriber

Error Messages/Logs

PS C:\Users\hunte> Get-Content "$env:APPDATA\Claude\logs\cowork_vm_node.log" | Select-Object -Last 20 2026-04-20 11:35:05 [info] [deleteVMBundle] Deleting reinstall files from C:\Users\hunte\AppData\Roaming\Claude\vm_bundles\claudevm.bundle 2026-04-20 11:35:05 [info] [deleteVMBundle] Reinstall files deleted (sessiondata.img and rootfs.img.zst preserved) 2026-04-20 11:36:59 [info] [cleanupVMBundleIfUnsupported] yukonSilver not supported (status=unsupported), checking for stale bundle... 2026-04-20 11:36:59 [info] [deleteVMBundle] Deleting reinstall files from C:\Users\hunte\AppData\Roaming\Claude\vm_bundles\claudevm.bundle 2026-04-20 11:36:59 [info] [deleteVMBundle] Reinstall files deleted (sessiondata.img and rootfs.img.zst preserved) 2026-04-20 12:00:17 [info] [cleanupVMBundleIfUnsupported] yukonSilver not supported (status=unsupported), checking for stale bundle... 2026-04-20 12:00:17 [info] [deleteVMBundle] Deleting reinstall files from C:\Users\hunte\AppData\Roaming\Claude\vm_bundles\claudevm.bundle 2026-04-20 12:00:17 [info] [deleteVMBundle] Reinstall files deleted (sessiondata.img and rootfs.img.zst preserved) 2026-04-20 12:06:24 [info] [cleanupVMBundleIfUnsupported] yukonSilver not supported (status=unsupported), checking for stale bundle... 2026-04-20 12:06:24 [info] [deleteVMBundle] Deleting reinstall files from C:\Users\hunte\AppData\Roaming\Claude\vm_bundles\claudevm.bundle 2026-04-20 12:06:24 [info] [deleteVMBundle] Reinstall files deleted (sessiondata.img and rootfs.img.zst preserved) 2026-04-20 12:12:55 [info] [cleanupVMBundleIfUnsupported] yukonSilver not supported (status=unsupported), checking for stale bundle... 2026-04-20 12:12:55 [info] [deleteVMBundle] Deleting reinstall files from C:\Users\hunte\AppData\Roaming\Claude\vm_bundles\claudevm.bundle 2026-04-20 12:12:55 [info] [deleteVMBundle] Reinstall files deleted (sessiondata.img and rootfs.img.zst preserved) 2026-04-20 12:20:13 [info] [cleanupVMBundleIfUnsupported] yukonSilver not supported (status=unsupported), checking for stale bundle... 2026-04-20 12:20:13 [info] [deleteVMBundle] Deleting reinstall files from C:\Users\hunte\AppData\Roaming\Claude\vm_bundles\claudevm.bundle 2026-04-20 12:20:13 [info] [deleteVMBundle] Reinstall files deleted (sessiondata.img and rootfs.img.zst preserved) 2026-04-20 12:26:49 [info] [cleanupVMBundleIfUnsupported] yukonSilver not supported (status=unsupported), checking for stale bundle... 2026-04-20 12:26:49 [info] [deleteVMBundle] Deleting reinstall files from C:\Users\hunte\AppData\Roaming\Claude\vm_bundles\claudevm.bundle 2026-04-20 12:26:49 [i

Steps to Reproduce

Start App in my configuration

Claude Model

Sonnet (default)

Is this a regression?

No, this never worked

Last Working Version

No response

Claude Code Version

1.3109.0

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

<img width="1920" height="1080" alt="Image" src="https://github.com/user-attachments/assets/c88debfb-7351-4de3-adc2-be5016a81c15" />

extent analysis

TL;DR

The issue is likely due to Claude's internal compatibility checker incorrectly flagging the system as unsupported, despite meeting all requirements, and a potential workaround is to manually verify the Hyper-V and hypervisor settings.

Guidance

  • Verify that Hyper-V is enabled and the hypervisor is running correctly by checking the Windows Features and Device Manager.
  • Check the Claude Code version and ensure it is up-to-date, as the issue may be resolved in a later version.
  • Review the system configuration and logs to identify any potential conflicts or errors that may be causing the compatibility checker to fail.
  • Consider reaching out to Anthropic support for further assistance, as the issue may be specific to the user's system or configuration.

Example

No code snippet is provided as the issue is related to system configuration and compatibility.

Notes

The issue may be specific to the user's system or configuration, and further troubleshooting may be required to identify the root cause. The provided logs and system information may not be sufficient to determine the exact cause of the issue.

Recommendation

Apply workaround: Manually verify the Hyper-V and hypervisor settings to ensure they are correctly configured, and reach out to Anthropic support for further assistance if the issue persists. This is recommended as the issue is likely related to the compatibility checker and may require specific troubleshooting steps to resolve.

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