IDE Analyzer gets stuck - Code navigation is broken

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Burkhart
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In a bunch of files (Kotlin), code inspection is not working. Can't navigate to usage, can't navigate to types, nothing.

In the top right corner, there's the hint “Analyzing…” but nothing happens. No erros, nothing. No project-wide indexing process is running.

“Repair IDE on file” produces nothing.

This behavior is persistent, a restart doesn't fix the issue.

IDE is unusable.

Running Build #IU-263.7307.200

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Abhishek Sah
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This looks like a highlighting pass that fails in the background. When that happens, the error goes only to `idea.log`, and the editor keeps showing "Analyzing…". On 2026.3, a non-bundled plugin built for an older version of the Kotlin plugin can cause this. [KTIJ-40383](https://youtrack.jetbrains.com/issue/KTIJ-40383) is one such case, with the Kotlin Mismatch Hints plugin.

Two things would tell us the cause:

1) That issue lists a workaround: disable the plugin in **Settings | Plugins** and restart the IDE. If you use non-bundled plugins, update them, or disable them for a test. Does highlighting come back in the affected files?

2) If the problem stays, open an affected file and wait until it stops at "Analyzing…". Do not restart the IDE. Select **Help | Collect Logs and Diagnostic Data**. Upload the archive to https://uploads.jetbrains.com. Post the Upload ID that the page shows in this thread. Only JetBrains can open the upload, so the ID is safe to share here.
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