Claude Desktop Hyper-V VM Spawn Detailed in GitHub Report

The GitHub issue https://github.com/anthropics/claude-code/issues/29045 reports Claude Desktop launching a 1.8 GB Vmmem Hyper-V VM on Windows 11 at every launch, even for chat-only use, after prior Cowork mode activation. Primary diagnostics cite repeated vmcompute service triggers via RPC GUID bc90d167-9470-4139-a9ba-be0bbbf5b74d and 2,689 stale %APPDATA%\Claude\local-agent-mode-sessions files. Microsoft Hyper-V event logs record error 0xC037010D on invalid JSON documents since 2/19/2026. Anthropic has not issued a public response. Related Windows virtualization traces appear in prior WSL and Docker trigger reports from Microsoft docs at https://learn.microsoft.com/en-us/windows/wsl/troubleshooting. A secondary pattern surfaces in earlier Anthropic CLI issues where session artifacts accumulated without cleanup routines. Three paragraphs follow: First, the VM persists post-deletion of session files and vmwp.exe termination, restarting on app reopen. Second, VirtualMachinePlatform alone enables the trigger despite disabled WSL, Hyper-V management, and Docker. Third, memory impact reaches 11% on 16 GB systems, with no fallback to non-virtualized chat mode documented in the report.