Failed to start task on Windows: Failed to start conversation: Failed to spawn Claude process: Error: Failed to spawn Claude process - no PID assigned

[4ier]

[hamzahmhmmd]

Same error here, when start new and continue existing conversation.

Server Log

11:57:48 AM [ClaudeProcessManager] Failed to spawn Claude process - no PID assigned streamingId="00ac755b-4327-4274-9675-e89845f4cb7e" killed=false
11:57:48 AM [ClaudeProcessManager] Error in spawnProcess err="Failed to spawn Claude process - no PID assigned" streamingId="00ac755b-4327-4274-9675-e89845f4cb7e"
Error: Failed to spawn Claude process - no PID assigned
    at ClaudeProcessManager.spawnProcess (file:///C:/Users/me/scoop/persist/nodejs/bin/node_modules/cui-server/dist/services/claude-process-manager.js:683:23)
    at ClaudeProcessManager.executeConversationFlow (file:///C:/Users/me/scoop/persist/nodejs/bin/node_modules/cui-server/dist/services/claude-process-manager.js:416:34)
    at async file:///C:/Users/me/scoop/persist/nodejs/bin/node_modules/cui-server/dist/routes/conversation.routes.js:82:49
11:57:48 AM [ClaudeProcessManager] Error starting conversation err="Failed to spawn Claude process: Error: Failed to spawn Claude process - no PID assigned" streamingId="00ac755b-4327-4274-9675-e89845f4cb7e" errorName="CUIError" errorMessage="Failed to spawn Claude process: Error: Failed to spawn Claude process - no PID assigned" errorCode="PROCESS_SPAWN_FAILED"
CUIError: Failed to spawn Claude process: Error: Failed to spawn Claude process - no PID assigned
    at ClaudeProcessManager.spawnProcess (file:///C:/Users/me/scoop/persist/nodejs/bin/node_modules/cui-server/dist/services/claude-process-manager.js:698:19)
    at ClaudeProcessManager.executeConversationFlow (file:///C:/Users/me/scoop/persist/nodejs/bin/node_modules/cui-server/dist/services/claude-process-manager.js:416:34)
    at async file:///C:/Users/me/scoop/persist/nodejs/bin/node_modules/cui-server/dist/routes/conversation.routes.js:82:49
11:57:48 AM [ErrorHandler] CUIError in request requestId="7pzii" code="PROCESS_SPAWN_FAILED" message="Failed to spawn Claude process: Error: Failed to spawn Claude process - no PID assigned" statusCode=500 url="/api/conversations/start" method="POST"
11:57:48 AM [ClaudeProcessManager] Claude process spawn error err="spawn C:\Users\me\scoop\persist\nodejs\bin\node_modules\cui-server\node_modules\.bin\claude ENOENT" streamingId="00ac755b-4327-4274-9675-e89845f4cb7e" errorCode="ENOENT" errorErrno=-4058 errorSyscall="spawn C:\Users\me\scoop\persist\nodejs\bin\node_modules\cui-server\node_modules\.bin\claude" errorPath="C:\Users\me\scoop\persist\nodejs\bin\node_modules\cui-server\node_modules\.bin\claude" errorSpawnargs=["-p","test","--output-format","stream-json","--verbose","--mcp-config","C:\\Users\\ME~1\\AppData\\Local\\Temp\\cui-mcp-config-300e69fd-733e-4d0e-aaca-f9df2c30627a.json","--permission-prompt-tool","mcp__cui-permissions__approval_prompt","--allowedTools","mcp__cui-permissions__approval_prompt"]
Error: spawn C:\Users\me\scoop\persist\nodejs\bin\node_modules\cui-server\node_modules\.bin\claude ENOENT
    at ChildProcess._handle.onexit (node:internal/child_process:286:19)
    at onErrorNT (node:internal/child_process:484:16)
    at process.processTicksAndRejections (node:internal/process/task_queues:90:21)
11:57:48 AM [ClaudeProcessManager] Claude executable not found streamingId="00ac755b-4327-4274-9675-e89845f4cb7e" attemptedPath="C:\Users\me\scoop\persist\nodejs\bin\node_modules\cui-server\node_modules\.bin\claude" PATH="C:\Users\me\scoop\persist\nodejs\bin;C:\Users\me\claudecodeui\node_modules\.bin;C:\Users\me\node_modules\.bin;C:\Users\node_modules\.bin;C:\node_modules\.bin;C:\Users\me\scoop\persist\nodejs\bin\node_modules\npm\node_modules\@npmcli\run-script\lib\node-gyp-bin;C:\Users\me\scoop\apps\git\2.51.0\mingw64\bin;C:\Users\me\scoop\apps\git\2.51.0\usr\bin;C:\Users\me\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0;C:\WINDOWS\System32\OpenSSH;C:\Program Files\Docker\Docker\resources\bin;C:\Users\me\scoop\apps\nodejs\current\bin;C:\Users\me\scoop\apps\nodejs\current;C:\Users\me\scoop\apps\python\current\Scripts;C:\Users\me\scoop\apps\python\current;C:\Users\me\.local\bin;C:\Users\me\scoop\shims;C:\Users\me\AppData\Local\Microsoft\WindowsApps;C:\Users\me\AppData\Local\Microsoft\WinGet\Packages\Gyan.FFmpeg_Microsoft.Winget.Source_8wekyb3d8bbwe\ffmpeg-7.1.1-full_build\bin;C:\Users\me\.lmstudio\bin;C:\Users\me\AppData\Local\Microsoft\WinGet\Packages\Ngrok.Ngrok_Microsoft.Winget.Source_8wekyb3d8bbwe;C:\Users\me\AppData\Local\Programs\cursor\resources\app\bin;C:\Users\me\AppData\Local\Programs\Microsoft VS Code\bin"

[hamzahmhmmd]

Same error here, when start new and continue existing conversation.

Server Log

11:57:48 AM [ClaudeProcessManager] Failed to spawn Claude process - no PID assigned streamingId="00ac755b-4327-4274-9675-e89845f4cb7e" killed=false
11:57:48 AM [ClaudeProcessManager] Error in spawnProcess err="Failed to spawn Claude process - no PID assigned" streamingId="00ac755b-4327-4274-9675-e89845f4cb7e"
Error: Failed to spawn Claude process - no PID assigned
    at ClaudeProcessManager.spawnProcess (file:///C:/Users/me/scoop/persist/nodejs/bin/node_modules/cui-server/dist/services/claude-process-manager.js:683:23)
    at ClaudeProcessManager.executeConversationFlow (file:///C:/Users/me/scoop/persist/nodejs/bin/node_modules/cui-server/dist/services/claude-process-manager.js:416:34)
    at async file:///C:/Users/me/scoop/persist/nodejs/bin/node_modules/cui-server/dist/routes/conversation.routes.js:82:49
11:57:48 AM [ClaudeProcessManager] Error starting conversation err="Failed to spawn Claude process: Error: Failed to spawn Claude process - no PID assigned" streamingId="00ac755b-4327-4274-9675-e89845f4cb7e" errorName="CUIError" errorMessage="Failed to spawn Claude process: Error: Failed to spawn Claude process - no PID assigned" errorCode="PROCESS_SPAWN_FAILED"
CUIError: Failed to spawn Claude process: Error: Failed to spawn Claude process - no PID assigned
    at ClaudeProcessManager.spawnProcess (file:///C:/Users/me/scoop/persist/nodejs/bin/node_modules/cui-server/dist/services/claude-process-manager.js:698:19)
    at ClaudeProcessManager.executeConversationFlow (file:///C:/Users/me/scoop/persist/nodejs/bin/node_modules/cui-server/dist/services/claude-process-manager.js:416:34)
    at async file:///C:/Users/me/scoop/persist/nodejs/bin/node_modules/cui-server/dist/routes/conversation.routes.js:82:49
11:57:48 AM [ErrorHandler] CUIError in request requestId="7pzii" code="PROCESS_SPAWN_FAILED" message="Failed to spawn Claude process: Error: Failed to spawn Claude process - no PID assigned" statusCode=500 url="/api/conversations/start" method="POST"
11:57:48 AM [ClaudeProcessManager] Claude process spawn error err="spawn C:\Users\me\scoop\persist\nodejs\bin\node_modules\cui-server\node_modules\.bin\claude ENOENT" streamingId="00ac755b-4327-4274-9675-e89845f4cb7e" errorCode="ENOENT" errorErrno=-4058 errorSyscall="spawn C:\Users\me\scoop\persist\nodejs\bin\node_modules\cui-server\node_modules\.bin\claude" errorPath="C:\Users\me\scoop\persist\nodejs\bin\node_modules\cui-server\node_modules\.bin\claude" errorSpawnargs=["-p","test","--output-format","stream-json","--verbose","--mcp-config","C:\\Users\\ME~1\\AppData\\Local\\Temp\\cui-mcp-config-300e69fd-733e-4d0e-aaca-f9df2c30627a.json","--permission-prompt-tool","mcp__cui-permissions__approval_prompt","--allowedTools","mcp__cui-permissions__approval_prompt"]
Error: spawn C:\Users\me\scoop\persist\nodejs\bin\node_modules\cui-server\node_modules\.bin\claude ENOENT
    at ChildProcess._handle.onexit (node:internal/child_process:286:19)
    at onErrorNT (node:internal/child_process:484:16)
    at process.processTicksAndRejections (node:internal/process/task_queues:90:21)
11:57:48 AM [ClaudeProcessManager] Claude executable not found streamingId="00ac755b-4327-4274-9675-e89845f4cb7e" attemptedPath="C:\Users\me\scoop\persist\nodejs\bin\node_modules\cui-server\node_modules\.bin\claude" PATH="C:\Users\me\scoop\persist\nodejs\bin;C:\Users\me\claudecodeui\node_modules\.bin;C:\Users\me\node_modules\.bin;C:\Users\node_modules\.bin;C:\node_modules\.bin;C:\Users\me\scoop\persist\nodejs\bin\node_modules\npm\node_modules\@npmcli\run-script\lib\node-gyp-bin;C:\Users\me\scoop\apps\git\2.51.0\mingw64\bin;C:\Users\me\scoop\apps\git\2.51.0\usr\bin;C:\Users\me\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0;C:\WINDOWS\System32\OpenSSH;C:\Program Files\Docker\Docker\resources\bin;C:\Users\me\scoop\apps\nodejs\current\bin;C:\Users\me\scoop\apps\nodejs\current;C:\Users\me\scoop\apps\python\current\Scripts;C:\Users\me\scoop\apps\python\current;C:\Users\me\.local\bin;C:\Users\me\scoop\shims;C:\Users\me\AppData\Local\Microsoft\WindowsApps;C:\Users\me\AppData\Local\Microsoft\WinGet\Packages\Gyan.FFmpeg_Microsoft.Winget.Source_8wekyb3d8bbwe\ffmpeg-7.1.1-full_build\bin;C:\Users\me\.lmstudio\bin;C:\Users\me\AppData\Local\Microsoft\WinGet\Packages\Ngrok.Ngrok_Microsoft.Winget.Source_8wekyb3d8bbwe;C:\Users\me\AppData\Local\Programs\cursor\resources\app\bin;C:\Users\me\AppData\Local\Programs\Microsoft VS Code\bin"

Solved with WSL ✅✅