[BUG]

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Claude crashs

What Should Happen?

Bug Report: Accumulation of corrupted .claude.json files

Problem Description

Claude Code has generated 44 .claude.json.corrupted.* files in the user directory, causing instability and recurring crashes.

Environment

• OS: Windows 11 (Build 10.0.26200.6899)
• Claude Code Version: 2.0.31
• Date of Discovery: 2025-11-02

Observed Symptoms

1. Intermittent crashes/bugs of Claude Code
2. Progressive accumulation of corrupted files:

• First corrupted file: .claude.json.corrupted.1760600454420

• Last corrupted file: .claude.json.corrupted.1761875435954

• Total: 44 corrupted files

1. No automatic cleanup mechanism

Reproduction

1. Use Claude Code for multiple sessions
2. Observe the accumulation of .claude.json.corrupted.* files in %USERPROFILE%
3. Bugs/crashes become more frequent over time

Impact

• Increasing application instability
• Need for periodic manual cleanup
• Risk of data/configuration loss
• Degraded user experience

Temporary solution applied

Remove-Item 'C:\Users\[USERNAME]\.claude.json.corrupted.*' -Force

Suggestions for improvement

1. Auto-cleanup: Automatically remove corrupted files older than 7 days
2. Retention limit: Keep only the last 3 corrupted files for debugging
3. Notification: Alert the user when >10 corrupted files are detected
4. Robustness: Improve error handling when writing .claude.json
5. Logs: Add logs explaining why a file is marked as corrupted

Affected Logs/Files

List of corrupted files found:

• .claude.json.corrupted.1760600454420
• .claude.json.corrupted.1760655596703
• .claude.json.corrupted.1760658073261
• ... (41 other files)

Questions for the team

1. What triggers the creation of a .corrupted.* file?

1. Is it related to sudden application crashes?

1. Is there a planned automatic recovery mechanism?

---

Note: This bug affects the long-term user experience and should be addressed to improve the stability of Claude Code on Windows.

Error Messages/Logs

Steps to Reproduce

Bug Report: Accumulation of corrupted .claude.json files

Problem Description

Claude Code has generated 44 .claude.json.corrupted.* files in the user directory, causing instability and recurring crashes.

Environment

• OS: Windows 11 (Build 10.0.26200.6899)
• Claude Code Version: 2.0.31
• Date of Discovery: 2025-11-02

Observed Symptoms

1. Intermittent crashes/bugs of Claude Code
2. Progressive accumulation of corrupted files:

• First corrupted file: .claude.json.corrupted.1760600454420

• Last corrupted file: .claude.json.corrupted.1761875435954

• Total: 44 corrupted files

1. No automatic cleanup mechanism

Reproduction

1. Use Claude Code for multiple sessions
2. Observe the accumulation of .claude.json.corrupted.* files in %USERPROFILE%
3. Bugs/crashes become more frequent over time

Impact

• Increasing application instability
• Need for periodic manual cleanup
• Risk of data/configuration loss
• Degraded user experience

Temporary solution applied

Remove-Item 'C:\Users\[USERNAME]\.claude.json.corrupted.*' -Force

Suggestions for improvement

1. Auto-cleanup: Automatically remove corrupted files older than 7 days
2. Retention limit: Keep only the last 3 corrupted files for debugging
3. Notification: Alert the user when >10 corrupted files are detected
4. Robustness: Improve error handling when writing .claude.json
5. Logs: Add logs explaining why a file is marked as corrupted

Affected Logs/Files

List of corrupted files found:

• .claude.json.corrupted.1760600454420
• .claude.json.corrupted.1760655596703
• .claude.json.corrupted.1760658073261
• ... (41 other files)

Questions for the team

1. What triggers the creation of a .corrupted.* file?

1. Is it related to sudden application crashes?

1. Is there a planned automatic recovery mechanism?

---

Note: This bug affects the long-term user experience and should be addressed to improve the stability of Claude Code on Windows.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.0.31

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_