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minor✓ Resolved

Claude Code showing "JSON Parse error: Unexpected EOF" and writing excessive files on Windows

Anthropic (Claude)•Thu, Feb 26, 2026, 07:57 PM
Status
resolved
Duration
3h 12m
Updates
3
Coverage
0 articles

INCIDENT TIMELINE

✓ ResolvedThu, Feb 26, 2026, 11:10 PM
This incident has been resolved.
monitoringThu, Feb 26, 2026, 10:43 PM
We have deployed a fix to this issue in version 2.1.61. Run `claude update` to get the latest version. We are monitoring for config corruption rates in this version since it is a nondeterministic, environment-dependent failure.
identifiedThu, Feb 26, 2026, 09:06 PM
We are continuing to work on deploying a hotfix for this issue.
identifiedThu, Feb 26, 2026, 07:57 PM
We have identified a bug where Windows users are experiencing significant write contention for the .claude.json global config file, starting with Claude Code 2.1.59. We are working on a hotfix.

📊 TECHNICAL DETAILS

Internal ID
2cec5fcd-ef2d-4f64-8267-cc4f500d6b4d
External ID
3kjy2zn2w2bj
🕐 Started
Thu, Feb 26, 2026, 07:57 PM
🔄 Last Updated
Thu, Feb 26, 2026, 11:10 PM
✓ Resolved
Thu, Feb 26, 2026, 11:10 PM
MINOR
Impact Level
3h 12m
Total Duration
3
Status Updates
Affected Components
Claude Code
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