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Claude Code fixes & guides
7 guides · what breaks in Claude Code, why it happens, and the exact steps that fix it.
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Security notice, Oct 29, 2026: tampered Claude Code versions 2.1.312 and 2.1.313 were served from Cursor’s marketplace. Check if you were affected.
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Did You Install the Malicious Claude Code Extension in Cursor? How to Check and Fix It
Claude Code 2.1.312 and 2.1.313 from Cursor's marketplace planted an SSH backdoor on Oct 29, 2026. Check for the svc-telemetry key and fix it.
Read the fix - New
Why Claude Code missed code that's clearly in your file (it only read part of it)
Claude Code missing or duplicating code that's clearly in your file? It probably only read the first 2,000 lines. Here's how to tell, and how to point it at the right section.
Effort: Under 10 min A terminal Read the fix - New
Why Claude Code isn't following your CLAUDE.md file (it's probably never loaded)
CLAUDE.md rule getting silently ignored? Here's why subdirectory files load lazily, CLAUDE.local.md only works at the project root, and how to check exactly what's loaded with /memory.
Effort: Under 10 min A terminal Read the fix - New
Claude Code says your MCP server “Failed to connect” — it might not even be trying
"Failed to connect" isn't the only status claude mcp list can show. Here's why project-scoped MCP servers sit at Pending approval in a freshly cloned repo, the missing-type gotcha that silently drops remote servers, and how to tell which one you actually have.
Effort: Under 10 min A terminal Read the fix - New
Your Claude Code hook isn't firing (or isn't blocking anything) — here's why
You wired up a PreToolUse or PostToolUse hook and it either never runs or runs but doesn't stop anything. Here's the exact-match-vs-regex matcher rule, the exit-code-2-not-1 gotcha, and the other silent failure points — plus how to check each one.
Effort: About 30 min A terminal Read the fix - New
Why Claude Code stops following instructions you gave it earlier (it's not being stubborn)
Claude Code was doing exactly what you asked, then 20 minutes later it isn't anymore — and there is no error. Here is the actual mechanism (context compaction) and how to make instructions survive it.
Effort: Under 10 min A terminal Read the fix - New
Claude Code 529 errors and rate limits: how to tell which one you're hitting
Claude Code throwing a 529 or telling you you're rate limited? Here's how to diagnose which problem you actually have and what to do about each one.
Effort: Under 10 min A terminal Read the fix