Fix for 'VM Service Not Running' error in Cowork on Windows 11
Diagnosing and fixing the virtualization error
A user on r/ClaudeAI reported encountering a 'VM Service Not Running' error in Cowork on Windows 11 Home, particularly when tinkering with MCPs. The error appeared and disappeared randomly. After checking that Hyper-V was installed and running, they discovered the root cause: the hypervisor wasn't set to launch at boot.
Diagnostic command
To check if this is the issue, run this PowerShell command:
bcdedit /enum | findstr -i hypervisor
If the output shows hypervisorlaunchtype Off, that's the problem. The hypervisor needs to be active at the boot level, not just running as a service after Windows loads.
Fix command
To resolve this, run:
bcdedit /set hypervisorlaunchtype auto
After running this command, perform a full restart of your system and try Cowork again. The user confirmed this fixed their issue after multiple troubleshooting attempts.
📖 Read the full source: r/ClaudeAI
👀 See Also
Four Methods to Transfer ChatGPT History to Claude's Memory
Claude now offers memory import for ChatGPT data, but there are four approaches with different trade-offs: built-in import for speed, curated abstraction for control, full export for preservation, or a hybrid method combining all three.
Qwen3.x models fail silently in OpenClaw due to streaming output format mismatch
Qwen3.x models in streaming mode output to the 'reasoning' field instead of 'content', causing OpenClaw to silently fall through to fallback models. A proxy that translates API formats and injects 'think: false' fixes the issue, enabling full tool-call evaluation.
Using Claude to analyze writing patterns for better custom instructions
A Reddit user describes a method for creating more effective custom instructions by having Claude analyze 10 writing samples to identify concrete patterns like punctuation avoidance and analogy sources, rather than relying on subjective tone descriptions.
Qwen 3.5 122B MoE at 35 t/s on a Single 3090 with ik_llama.cpp MTP
A local stack running Qwen 3.5 122B MoE on a single 3090 at 35 t/s using ik_llama.cpp's fused MoE ops for MTP. Stock llama.cpp showed only +4% improvement; ik's fork yields +20%.