[Desktop] VM startup failure - HcnCreateEndpoint failed (0x80070490)

Resolved 💬 3 comments Opened Feb 15, 2026 by jelrod27 Closed Feb 19, 2026

Description

Claude Desktop fails to start the internal VM (Cowork VM) on Windows 11. The VM boot process fails with a Hyper-V network endpoint creation error.

Environment

  • App Version: 1.1.3189
  • Platform: Windows 11 Pro (10.0.26200)
  • CPU: 11th Gen Intel Core i7-11700K @ 3.60GHz
  • RAM: 31.74 GB (16.02 GB free)
  • GPU: NVIDIA GeForce RTX 3070

Error Log

The main error:

This error occurs repeatedly when attempting to start the VM. The app falls back to running without the VM.

Additional Errors

  • API connection errors (ECONNRESET)
  • CSP violations for segment.io
  • React hydration errors
  • Network timeouts

Expected Behavior

VM should start successfully, enabling full Claude Code functionality.

Actual Behavior

VM fails to start due to Hyper-V network endpoint creation failure.

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