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claude-code - 💡(How to fix) Fix VS Code extension 2.1.136 fails activation on Windows with build-agent-sdk sdk.mjs path error

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Claude Code for VS Code 2.1.136 fails to activate on Windows. Rolling back to 2.1.133 restores clean activation.

Error Message

Activating extension Anthropic.claude-code failed due to an error: TypeError: The argument 'filename' must be a file URL object, file URL string, or absolute path string. Received 'file:///home/runner/work/claude-cli-internal/claude-cli-internal/build-agent-sdk/sdk.mjs'

Root Cause

Claude Code for VS Code 2.1.136 fails to activate on Windows. Rolling back to 2.1.133 restores clean activation.

Fix Action

Fix / Workaround

  • 2.1.133 activates cleanly on the same machine.
  • 2.1.136 appears to include a bundled createRequire(...) path referencing /home/runner/work/.../build-agent-sdk/sdk.mjs.
  • Workaround: install 2.1.133.

Code Example

Activating extension Anthropic.claude-code failed due to an error:
TypeError: The argument 'filename' must be a file URL object, file URL string, or absolute path string. Received 'file:///home/runner/work/claude-cli-internal/claude-cli-internal/build-agent-sdk/sdk.mjs'

---

...\.vscode\extensions\anthropic.claude-code-2.1.136-win32-x64\extension.js:103:5579
RAW_BUFFERClick to expand / collapse

Summary

Claude Code for VS Code 2.1.136 fails to activate on Windows. Rolling back to 2.1.133 restores clean activation.

Environment

  • OS: Windows x64
  • VS Code: 1.119.0
  • Extension: anthropic.claude-code
  • Failing version: 2.1.136
  • Working version: 2.1.133

Steps to Reproduce

  1. Install anthropic.claude-code-2.1.136-win32-x64.vsix.
  2. Reload or reopen VS Code.
  3. Let the extension activate via onStartupFinished, or open the Claude Code panel.

Expected Behavior

Claude Code activates successfully.

Actual Behavior

Extension activation fails with:

Activating extension Anthropic.claude-code failed due to an error:
TypeError: The argument 'filename' must be a file URL object, file URL string, or absolute path string. Received 'file:///home/runner/work/claude-cli-internal/claude-cli-internal/build-agent-sdk/sdk.mjs'

Stack includes:

...\.vscode\extensions\anthropic.claude-code-2.1.136-win32-x64\extension.js:103:5579

Notes

  • 2.1.133 activates cleanly on the same machine.
  • 2.1.136 appears to include a bundled createRequire(...) path referencing /home/runner/work/.../build-agent-sdk/sdk.mjs.
  • Workaround: install 2.1.133.

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claude-code - 💡(How to fix) Fix VS Code extension 2.1.136 fails activation on Windows with build-agent-sdk sdk.mjs path error