IntelliJ IDEA Indexing Takes Forever

How to fix it

Try these in order — the most common fix is first.

1. 1. Exclude folders you do not edit

   Copy steps
   1. Right-click a folder such as build, target or node_modules in the Project tool window
   2. Choose Mark Directory as | Excluded
   3. Wait for the (shorter) re-index to finish
   Did this fix it? Yes No

2. 2. Invalidate caches

   Copy steps
   1. Open File | Invalidate Caches
   2. Tick the extra options only if a plain invalidation did not help
   3. Click Invalidate and Restart; caches are deleted only after the restart
   Did this fix it? Yes No

3. 3. Raise the IDE heap

   Copy steps
   1. Open Help | Change Memory Settings
   2. Increase the value (the -Xmx option)
   3. Click Save and Restart
   Did this fix it? Yes No

4. 4. Exclude the IDE and project folders from antivirus

   Copy steps
   1. Add your project directory and the IDE system/cache directories to the real-time scan exclusions of your antivirus
   2. Restart the IDE
   Did this fix it? Yes No

5. 5. Keep projects on a local SSD

   Copy steps
   1. Move the project out of network drives, synced folders (OneDrive, Dropbox) or slow external disks
   2. Reopen the project from the new location
   Did this fix it? Yes No

Symptoms

The status bar shows Indexing or Scanning files for minutes or hours, code completion and navigation are disabled, fans spin up.

Why it happens

• Generated or dependency folders (target, build, node_modules, .gradle) are inside the project and get scanned
• Corrupted caches or indexes
• Heap too small, so the IDE spends time in garbage collection
• Antivirus scanning the project and IDE system folders
• Large monorepo with many modules

This guide also covers

• intellij indexing forever
• intellij stuck on indexing
• intellij scanning files to index slow
• intellij indexing takes too long

Other JetBrains IntelliJ errors

• IntelliJ IDEA High Memory Usage
• IntelliJ IDEA Slow or Freezing
• IntelliJ IDEA Cannot Resolve Symbol
• IntelliJ IDEA Maven Import Failed
• IntelliJ IDEA Gradle Sync Failed
• IntelliJ IDEA JDK Not Found or Invalid
• IntelliJ IDEA License or Activation Error
• JetBrains AI Quota Exceeded in IntelliJ IDEA