IntelliJ IDEA – Support

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How to handle "Consider switching to a native launcher" notification Cannot connect to remote host: No route to host (macOS 15 Sequoia, macOS 27 Golden Gate)

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How-tos and troubleshooting articles, grouped by topic.

Security

Compromised JetBrains IntelliJ Plugins Stealing AI API Keys Reported in June 18, 2026 Users received confirmation emails about support tickets they never created (phishing attack)

Product Data Collection

Is there a way to programmatically determine at enterprise level whether a local IDE installation is inadvertently sharing data? Can users review and edit the data being shared before it is actually shared? If user opts out, can JetBrains delete any data already sent to the server? Is detailed data sharing disabled in Unified IntelliJ Distribution without a paid license? Is any data used to train LLMs collected in IntelliJ prior to v2025.3.1? What do users get in exchange for enabling detailed data sharing?

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Unified Distribution

Troubleshooting General IntelliJ IDEA Community Edition Ultimate subscription Trials

Unified Distribution

How To

How to troubleshoot JetBrains IDE crash or freeze How to troubleshoot JetBrains IDE slowness, high CPU or memory usage How to configure the new UI to behave more like classic one What is IDE theme and Color Scheme How to enable JetBrains AI in China

How to handle "Consider switching to a native launcher" notification Error occurred during initialization of VM java.lang.UnsupportedClassVersionError: com/intellij/platform/core/nio/fs/CoreBootstrapSecurityManag er has been compiled by a more recent version of the Java Runtime (class file version 61.0) How to fix issue error=13, Permission denied on macOS How to change the number of elements in title bar in Linux/Windows How to turn off Editor tabs headers in IntelliJ IDE How to fix Gradle issue Cause: error=2, No such file or directory on macOS

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Plugin Development

How to preview a not released plugin's updated description and changelog in a running IDE? Can't find the IDE Plugin entry under New Project dialog in IDEA 2024.1+ because DevKit plugin is not bundled How to open the keymap settings page and automatically select an action programmingly? Plugin Development Kotlin compilation fails with OutOfMemoryError: GC overhead limit exceeded Resolving Standalone Plugin Issue with JSP Scanning in IntelliJ IDEA

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Java

How to fix JavaFX running crash issue NSInternalInconsistencyException on macOS How to restore the Palette window in Swing GUI designer How to Configure TestNG Runner in IntelliJ to Ignore HTTPS Validation How to disable async profiler in debug mode How to use Dynamic Code Evolution VM (DCEVM) in IntelliJ Java debugger How to dump code completion ranking?

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Common workarounds

Lombok annotations are not recognized: variable not initialized in the default constructor

Cannot connect to remote host: No route to host (macOS 15 Sequoia, macOS 27 Golden Gate) Hidden Tool Window icons appear after IDE restarted National keyboard layout support issues in IntelliJ IDE Linux: AI Assistant logs out and requires password from keyring - An application wants access to the keyring "Default" but it is locked IDE crashes when Debug button is clicked (cause: MSI Afterburner) The IDE failed to install or update some plugins. AccessDeniedException: codeium ... language_server_windows_x64.exe

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IntelliJ LSP Server

Common Workarounds How To

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