← Back to Anthropic (Claude) History
minor✓ Resolved

Elevated errors on Claude Sonnet 4.5

Anthropic (Claude)•Wed, Jan 21, 2026, 02:44 PM
Status
resolved
Duration
1d 16h
Updates
2
Coverage
1 article

📰 RELATED ARTICLES

Anthropic (Claude) outage: Elevated errors: Invalid `signature` in `thinking` block
Anthropic (Claude) outage: Elevated errors: Invalid `signature` in `thinking` block
Jan 23, 2026 →

INCIDENT TIMELINE

✓ ResolvedFri, Jan 23, 2026, 06:57 AM
This incident has been resolved.
identifiedWed, Jan 21, 2026, 03:01 PM
The issue has been identified and a fix is being implemented.
investigatingWed, Jan 21, 2026, 02:44 PM
We are currently investigating this issue.

📊 TECHNICAL DETAILS

Internal ID
9e82d989-3928-4c0d-ad0f-c927a0dd945f
External ID
yrxt885v63jw
🕐 Started
Wed, Jan 21, 2026, 02:44 PM
🔄 Last Updated
Fri, Jan 23, 2026, 06:57 AM
✓ Resolved
Fri, Jan 23, 2026, 06:57 AM
MINOR
Impact Level
1d 16h
Total Duration
2
Status Updates
Affected Components
claude.aiplatform.claude.com (formerly console.anthropic.com)Claude API (api.anthropic.com)Claude Code
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