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Suppress console windows for local Windows MCP servers - #48238
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## What changed Expose Windows process creation flags on the shared command wrapper and use `CREATE_NO_WINDOW` when launching local stdio MCP servers, including fallback launches without Job Object containment. Preserve `CREATE_SUSPENDED` when assigning the server to a Job Object before execution. ## Testing Add a Windows regression test covering direct launches and launches through `cmd.exe`. Verify that the server has no console, initializes successfully, returns tools, and exits after shutdown. GitOrigin-RevId: 84475e82999d91a431e09327d4f5639b59c01427
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Suppress console windows for local Windows MCP servers
What changed
Expose Windows process creation flags on the shared command wrapper and use
CREATE_NO_WINDOWwhen launching local stdio MCP servers, including fallbacklaunches without Job Object containment. Preserve
CREATE_SUSPENDEDwhenassigning the server to a Job Object before execution.
Testing
Add a Windows regression test covering direct launches and launches through
cmd.exe. Verify that the server has no console, initializes successfully,returns tools, and exits after shutdown.