How to Fix Claude Code Error: “Expected object, but received undefined” in settings.json

Running into the Settings (C:\Users\username\.claude\settings.json): Expected object, but received undefined error stops Claude Code from launching entirely. This issue stems from a corrupted, empty, or missing settings.json file. When Claude Code boots up, it expects a valid root JSON object. If it encounters invalid formatting or an empty payload, the parser returns undefined and crashes the initialization process.

Resolving this error requires inspecting the current state of the file and restoring a valid JSON structure without losing existing user preferences.

Root Causes of the Error

Claude Code relies on C:\Users\<username>\.claude\settings.json to store global environment settings and runtime preferences. The configuration reader triggers this exception under three primary conditions:

  • The settings.json file does not exist at the expected path.
  • The file exists but has a 0-byte filesize, often caused by interrupted disk writes.
  • The file contains malformed JSON syntax, causing the parser to fail completely.

Step 1: Inspect the Current Settings File

Check the actual file status before applying modifications. Open PowerShell or CMD and execute the following read-only command:

Get-Item -Path "$env:USERPROFILE\.claude\settings.json" -ErrorAction SilentlyContinue | Select-Object Name, Length, LastWriteTime

Evaluate the CLI output:

  • No returned output indicates the file is missing.
  • A Length value of 0 indicates an empty file.
  • A Length value greater than 0 indicates existing content with syntax corruption.

Step 2: Repair and Reset the Configuration

Select the appropriate recovery command sequence based on the inspection result.

Scenario A: File Missing or Empty (Direct Creation)

If the file is absent or zero bytes, write a minimal valid JSON object {} directly to the target path using PowerShell:

New-Item -Path "$env:USERPROFILE\.claude\settings.json" -ItemType File -Value "{}`n" -Force

This generates a valid configuration file, allowing Claude Code to parse the object and populate default parameters upon the next launch.

Scenario B: File Present but Corrupted (Backup and Reset)

If the file size is greater than 0 bytes, overwriting it immediately risks losing custom key-value pairs. Rename the file to create a backup before generating a clean config:

Rename-Item -Path "$env:USERPROFILE\.claude\settings.json" -NewName "settings.json.bak" -Force
New-Item -Path "$env:USERPROFILE\.claude\settings.json" -ItemType File -Value "{}`n" -Force

Inspect settings.json.bak in a text editor to recover required parameter blocks, correct any structural syntax errors, and merge them back into the active settings.json file.

Quick Reference Guide

Diagnostic Result File Inspection Output Recovery Action
Missing File No output from Get-Item Run New-Item to write {}
Zero-Byte File Length value equals 0 Run New-Item to overwrite with {}
Invalid JSON Syntax Length value greater than 0 Rename to .bak, then generate fresh {} file

Frequently Asked Questions (FAQ)

What causes the “Expected object, but received undefined” error in Claude Code?

Claude Code requires settings.json to evaluate to a valid JSON object. When the file is empty, missing, or syntactically invalid, the JSON parser returns undefined, triggering a type validation failure.

Will fixing this issue reset my Claude Code settings?

Creating a fresh file resets settings to default. Renaming the existing file to settings.json.bak preserves past configurations for manual recovery.

Does writing {} allow Claude Code to launch normally?

Yes. {} represents a valid empty JSON object. Claude Code accepts this structure without throwing exceptions and automatically populates necessary operational keys on startup.

How can I check if settings.json contains valid JSON syntax?

Open the file in an editor like VS Code to highlight syntax errors automatically, or validate the payload using a CLI JSON linter.

How do I fix permission denied errors when running New-Item in PowerShell?

Launch PowerShell as an Administrator or adjust the security permissions on the C:\Users\<username>\.claude folder to grant write access to your current user account.