When running mcp wrapper script in Windows gives error "no such file"

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1

OS: Windows 11

Cursor IDE version: 2.4.22

Cursor Terminal: Git bash

After updating to latest version, I’m not able to turn on my mcp server that uses a wrapper script due to file not found error.

Sample mcp.json:

{
  "mcpServers": {    
    "Jenkins": {
      "command": "src/scripts/cursor/startJenkinsServer.sh"
    }
  }
}

Error from Output tab:

[error] /bin/bash: c:UsersjdoefoldersrcscriptscursorstartJenkinsServer.sh: No such file or directory

I used to be able to do this successfully in a prior Cursor version. I’m able to run that command on the cursor terminal successfully.

2

Hi there!

We detected that this may be a bug report, so we’ve moved your post to the Bug Reports category.

To help us investigate and fix this faster, could you edit your original post to include the details from the template below?

Bug Report Template - Click to expand

Where does the bug appear (feature/product)?

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Version Information

  • For Cursor IDE: Menu → About Cursor → Copy
  • For Cursor CLI: Run agent about in your terminal
IDE:
Version: 2.xx.x
VSCode Version: 1.105.1
Commit: ......

CLI:
CLI Version 2026.01.17-d239e66

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Does this stop you from using Cursor?

  • Yes - Cursor is unusable
  • Sometimes - I can sometimes use Cursor
  • No - Cursor works, but with this issue

The more details you provide, the easier it is for us to reproduce and fix the issue. Thanks!

4

Hey, thanks for the report. It looks like a bug in MCP’s handling of Windows paths. Backslashes get stripped when converting a relative path to an absolute one.

For now, here are a couple of workarounds:

  1. Try using forward slashes in the absolute path:
{
  "mcpServers": {    
    "Jenkins": {
      "command": "bash",
      "args": ["C:/Users/jdoe/folder/src/scripts/cursor/startJenkinsServer.sh"]
    }
  }
}
  1. Or run it through bash explicitly with -c:
{
  "mcpServers": {    
    "Jenkins": {
      "command": "bash",
      "args": ["-c", "./src/scripts/cursor/startJenkinsServer.sh"]
    }
  }
}

One more question. Do you remember which Cursor version worked fine? That would help us narrow down the regression.

5

it was a 2.3x version.

1 Like
6

@deanrie do you know when this will be fixed?

7

Hey, thanks for the ping. We’ve already escalated the bug report, but there’s no concrete timeline for when it’ll be fixed yet.

Right now, the workarounds I mentioned above are the best option:

  • Use forward slashes instead of backslashes in the absolute path
  • Or run it via bash -c with a relative path

I know it’s inconvenient, but for now this is the only way to get around the issue. I’ll post here once the fix is out.