How to delete the cached index and stored EULA consent for Java and Kotlin by IntelliJ IDEA in VS Code – Support | JetBrains

Background/Situation

The extension stores data in three places in VS Code: a per-project index and cache, a downloaded language-server binary shared across projects, and the EULA acceptance and license state. Removing this data resets the extension to a clean state, which is useful after a corrupted index, a stuck download, or before a fresh setup.

The same steps apply to the "Kotlin by JetBrains" extension; only the downloaded-binary folder name differs (kotlin-server instead of intellij-server).

Question

How to delete the language server's cached index, downloaded binary, and stored consent for IntelliJ IDEA in Visual Studio Code?

Answer

Clear the per-project index and caches

Open the Command Palette (Ctrl+Shift+P, macOS Cmd+Shift+P) and run IntelliJ: Clear Caches and Restart Language Server. This deletes the project's index directory and rebuilds it. The confirmation dialog shows the exact index path.

If the extension is connected to an external server (intellij.dev.serverPort is set), caches can't be cleared from the editor. The dialog offers Copy Path; stop that server and delete the copied directory manually.

Delete the downloaded language server

In Settings, enable intellij.dev.commands, then run IntelliJ (Developer): Remove Downloaded Language Server from the Command Palette and reload the window when prompted. The extension downloads the server again on the next start.

To delete it manually, close VS Code and delete this folder:

macOS: ~/Library/Application Support/JetBrains/IntelliJServer/servers/intellij-server
Windows: %LOCALAPPDATA%\JetBrains\IntelliJServer\servers\intellij-server
Linux: ~/.local/share/JetBrains/IntelliJServer/servers/intellij-server, or $XDG_DATA_HOME/JetBrains/IntelliJServer/servers/intellij-server if XDG_DATA_HOME is set

Reset EULA acceptance and license state

In Settings, enable intellij.dev.commands, then run IntelliJ (Developer): Reset Licensing and Agreements from the Command Palette. The EULA and license setup run again on next start.

Delete the log file

The server writes its log-file path to its Output channel (View | Output, see User interface) as a Log file: <path> line. Open that path and delete the file if a clean log is needed.