Looking for /usr/bin/bash in Windows.

[Laksiri]

I had Serena working properly on VS Code and Claude Code (in Windows) up until yesterday (Nov-06). I m getting this error since today. Is Windows compatibility not supported anyone?

This totally could be my local issue. If someone can point me to the correct direction, that would be really appreciated.

PS D:\vibe\habit_app\stoa> claude --debug
[DEBUG] Using bash path: "C:\Program Files\Git\bin\bash.exe"
[DEBUG] Writing to temp file: C:\Users\laksi.claude.json.tmp.8312.1762566859060
[DEBUG] Preserving file permissions: 100666
[DEBUG] Temp file written successfully, size: 331187 bytes
[DEBUG] Applied original permissions to temp file
[DEBUG] Renaming C:\Users\laksi.claude.json.tmp.8312.1762566859060 to C:\Users\laksi.claude.json
[DEBUG] File C:\Users\laksi.claude.json written atomically
[DEBUG] MCP server "serena": Starting connection attempt
[ERROR] MCP server "serena" Server stderr: /usr/bin/bash: Files\Git\bin\bash.exe: No such file or directory
[DEBUG] MCP server "serena": Connection failed: McpError: MCP error -32000: Connection closed
[DEBUG] MCP server "serena": Error message: MCP error -32000: Connection closed
[DEBUG] MCP server "serena": Error stack: McpError: MCP error -32000: Connection closed
at new zV (B:/~BUN/root/claude.exe:1277:10572)
at _onclose (B:/~BUN/root/claude.exe:1277:12664)
at (B:/~BUN/root/claude.exe:1277:11984)
at (B:/~BUN/root/claude.exe:1279:1464)
at emit (node:events:98:22)
at #maybeClose (node:child_process:758:16)
at emit (node:events:92:22)
at emitCloseNT (internal:streams/destroy:78:14)
at processTicksAndRejections (native:7:39)
at spawnSync (unknown)
[ERROR] MCP server "serena" Connection failed: MCP error -32000: Connection closed
[DEBUG] MCP server "serena": Connection attempt completed in 182ms - status: failed
[DEBUG] Creating shell snapshot for bash (C:\Program Files\Git\bin\bash.exe)
[DEBUG] Shell config file not found: C:\Users\laksi.bashrc, creating snapshot with Claude Code defaults only
[DEBUG] Creating snapshot at: C:\Users\laksi.claude\shell-snapshots\snapshot-bash-1762566859497-2nyvaa.sh
[DEBUG] Writing to temp file: C:\Users\laksi.claude\todos\70902719-980b-423d-a40c-739b697eebfc-agent-70902719-980b-423d-a40c-739b697eebfc.json.tmp.8312.1762566859570
[DEBUG] Temp file written successfully, size: 2 bytes
[DEBUG] Renaming C:\Users\laksi.claude\todos\70902719-980b-423d-a40c-739b697eebfc-agent-70902719-980b-423d-a40c-739b697eebfc.json.tmp.8312.1762566859570 to C:\Users\laksi.claude\todos\70902719-980b-423d-a40c-739b697eebfc-agent-70902719-980b-423d-a40c-739b697eebfc.json
[DEBUG] File C:\Users\laksi.claude\todos\70902719-980b-423d-a40c-739b697eebfc-agent-70902719-980b-423d-a40c-739b697eebfc.json written atomically
[DEBUG] Shell snapshot created successfully (1327 bytes)
[DEBUG] Writing to temp file: C:\Users\laksi.claude.json.tmp.8312.1762566860651
[DEBUG] Preserving file permissions: 100666
[DEBUG] Temp file written successfully, size: 331187 bytes
[DEBUG] Applied original permissions to temp file
[DEBUG] Renaming C:\Users\laksi.claude.json.tmp.8312.1762566860651 to C:\Users\laksi.claude.json
[DEBUG] File C:\Users\laksi.claude.json written atomically
[DEBUG] Executing hooks for SessionStart:startup
[DEBUG] Getting matching hook commands for SessionStart with query: startup
[DEBUG] Found 0 hook matchers in settings
[DEBUG] Matched 0 unique hooks for query "startup" (0 before deduplication)
[DEBUG] Found 0 hook commands to execute

[opcode81]

Please check the latest logs in ~/.serena/logs for any errors - and perhaps paste them here if there is anything peculiar about them. Windows support is very important to us and will never be dropped.

I just tested Claude Code with the latest version of Serena on Windows, and it is working for me.

[opcode81]

@Laksiri please send us some logs.

[Laksiri]

mcp_20251107-134030.txt
mcp_20251107-160932.txt
mcp_20251107-205053.txt

@opcode81 - Sorry for the delay from my end. I have attached some logs from last Friday.

[opcode81]

There is no problem in any of these logs. Serena starts up correctly.
This makes me think that the issue are seeing in Claude's logs is due to the way Claude is launching things; the logs are strictly from Claude, not Serena. Are you using bash to start the Serena MCP server?
Anyway, I always use Claude from Git-Bash instead of PowerShell, so maybe you could try that.

[Laksiri]

I usually, do within the terminal in VS Code (I thinks that is PowerShell). Let me give it a try with Git-bash. Also, I;m thinking about reset the complete tool chain. Let me do some tests from my end and share what I find.