JetBrains Plugin Incompatibility Fix (2026)

The Error

Plugin 'Claude Code' is not compatible with the current version of IntelliJ IDEA 2025.3.1
  Required: IntelliJ Platform 2026.1+
  Installed: IntelliJ Platform 2025.3
  Plugin disabled to prevent IDE instability.

This appears when the Claude Code JetBrains plugin requires a newer IDE version than what you have installed.

The Fix

# Update your JetBrains IDE:
# Help > Check for Updates > Download and Install
# Or install via Toolbox:
# JetBrains Toolbox > [Your IDE] > Update
  1. Update your JetBrains IDE to the latest version.
  2. Restart the IDE after the update.
  3. Re-enable the Claude Code plugin: Settings > Plugins > Installed > Claude Code > Enable.

Why This Happens

JetBrains plugins declare a minimum IDE platform version in their plugin.xml. When the Claude Code plugin is updated with features that use newer IDE APIs, older IDE versions cannot load the plugin. JetBrains disables incompatible plugins automatically to prevent crashes. This is more common with EAP (Early Access Program) plugin builds.

If That Doesn’t Work

Install a compatible older version of the plugin:

Settings > Plugins > Claude Code > gear icon > Install Specific Version

If JetBrains AI Assistant conflicts with Claude Code:

Settings > Plugins > Installed > JetBrains AI Assistant > Disable

Use Claude Code CLI in the JetBrains terminal tab instead:

# Open Terminal tab in JetBrains IDE (Alt+F12)
claude

Clear the plugin cache and reinstall:

rm -rf ~/.cache/JetBrains/IntelliJIdea*/plugins/claude-code
# Restart IDE and reinstall from marketplace

Prevention

# CLAUDE.md rule
Keep JetBrains IDE updated to the latest stable release. Check plugin compatibility before updating the Claude Code plugin. If the plugin fails, use Claude Code CLI in the terminal tab as a fallback.

See Also

This fix also applies if you see variations of this error:

  • Connection or process errors with similar root causes in the same subsystem
  • Timeout variants where the operation starts but does not complete
  • Permission variants where access is denied to the same resource
  • Configuration variants where the same setting is missing or malformed

If your specific error message differs slightly from the one shown above, the fix is likely the same. The key indicator is the operation that failed (shown in the stack trace) rather than the exact wording of the message.

Frequently Asked Questions

Does this error affect all operating systems?

This error can occur on macOS, Linux, and Windows (WSL). The exact error message may differ slightly between platforms, but the root cause and fix are the same. macOS users may see additional Gatekeeper or notarization prompts. Linux users should check that the relevant system packages are installed. Windows users should ensure they are running inside WSL2, not native Windows.

Will this error come back after updating Claude Code?

Updates can occasionally reintroduce this error if the update changes default configurations or dependency requirements. After updating Claude Code, verify your project still builds and runs correctly. If the error returns, reapply the fix and check the changelog for breaking changes.

Can this error cause data loss?

No, this error occurs before or during an operation and does not corrupt existing files. Claude Code’s edit operations are atomic — they either complete fully or not at all. However, if the error occurs during a multi-step operation, you may have partial changes that need to be reviewed with git diff before continuing.

How do I report this error to Anthropic if the fix does not work?

Open an issue at github.com/anthropics/claude-code with: (1) the full error message including stack trace, (2) your Node.js version (node --version), (3) your Claude Code version (claude --version), (4) your operating system and version, and (5) the command or operation that triggered the error.

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