Fix: Microsoft Windows Search Indexer High Disk or CPU Usage

If you suddenly notice a performance drop on your computer, you open the Task Manager to check which application makes the system slow down. In the Task Manager, If you find a process called “Microsoft Windows Search Indexer” or “searchindexer.exe” is running at very high CPU and Disk usage, then, In this guide, we will explain what this is and how you can tackle this.

Microsoft Windows Search Indexer High CPU and Disk

What is Microsoft Windows Search Indexer?

Microsoft Windows search indexer is a program whose job is to index all the files and folders on Windows. When you search something in the Start Menu search bar or File explorer search bar, you get the result immediately if the content you’re searching is already indexed.

The Search Indexer process may use the Disk as high as 100% in the background, which may slow down your system performance. All the data is stored on the Disk; therefore, when Search Indexer or seachindex.exe has been crawling the Disk data, the disk usage can go up to 100%.

This process should end soon, but sometimes this process is stuck in the background due to some errors. If this process is continuously using the disk 100%, you won’t be able to open any computer program because no disk resource will be available to transfer the files on the RAM.

Microsoft Windows Search Indexer High Disk or CPU Usage

Before you follow the steps, you should wait for a long while to check if the Windows Search Indexer process ends itself. This process, when started, can take hours to complete; therefore, you should not be worried.

1. Stop Microsoft Windows Search Indexer

If you want to stop this process because it interrupts the work you do on your Windows computer, then follow the step to stop the indexing.

  1. Go to the Start Menu.
  2. Search “Indexing options” in the search box.
  3. Click on the “Indexing Options” in the search result.
  4. This opens the “Indexing Options” window.
  5. Click the “Pause” button to stop the Search Indexing.
Microsoft Windows Search Indexer High CPU

This time, the Microsoft Window search indexer process should stop in the background.

A quick tip: If the Indexing status is already completed, you will notice that the “Pause” button is grayed out or disabled. It means Indexing is completed; you should check the “Windows Search Indexer” process in the Task Manager.

If there is an error and the “Windows Search Indexer” still running in the background, you should run the “Search and indexing” troubleshooter.

3. Run the Search Indexer troubleshooter

If you’ve stooped the search indexing, but still Windows Search Indexer is running in the background. Now, you should use the built-in troubleshooter in Windows 10 to fix this error.

Follow the steps.

  1. Open Windows 10’s settings.
  2. Select Update & Security > Troubleshoot.
  3. On the Troubleshoot page, click the Additional troubleshooters.
  4. Under the Fix and fix other problems, select the Search and Indexing.
  5. Click the Run the troubleshooter button to run the troubleshooter.
  6. Follow the on-screen instructions to fix the error.
Windows Search Indexer High CPU and Disk

If this doesn’t solve your problem, then follow the next step.

3. Restart the Windows Search service

If the above methods are not working. Now this time, you should restart the Windows Search Indexer or SearchIndexer.exe service. The following steps will show you how to do this.

  1. Press the “Windows Logo + R” shortcut key to open the Run box.
  2. Type services.msc in the Run box.
  3. This will open the Services window.
  4. Find the “Windows Search” service.
  5. Double-click the Windows Search service to open its properties.
  6. Under the Service status, click the Stop button to stop the service.
Windows Search Indexer High CPU
  1. Click the Apply and OK.
  2. Restart the computer.

Once you complete these steps, “Windows Search Indexer” will start automatically in the background to build the search index. You should open the “Indexing option” to check whether the indexing is running.

You should never disable the “Window Search” service as it is useful for you; we never recommend taking this step.

Now, you should rebuild the Search Index again. To rebuild the search index, search the “indexing option” in the start menu search box, then open the “Indexing options”, click the Advanced option, and then click the rebuild button to start the rebuilding process. This process will take some time, and it also depends on the system’s performance.

If the indexing was not completed in the previous attempt due to some error, now it should be complete. You have to wait for a while until indexing completes. Once the indexing is finished, the “Microsoft Windows Search Indexer” will end itself.

How to Turn off Search Indexer

Although doing this is not recommended anymore. Suppose you’ve disabled the Windows search service, and then if you search something in the start menu’s search box, you won’t be able to get the result back.

However, we are covering this topic for some users who might want to do this hilarious thing.

  1. First of all press the “Windows Logo + R” shortcut key to open the Run box.
  2. Then, type “services.msc” in the Run box, then hit the enter button.
  3. This will open the Services window.
  4. Now find the “Window Search” service, which you can navigate by using the “W” alphabet key.
  5. Double-click the Window search service to open its properties.
  6. Check the Service status.
  7. Click the Stop button to stop the service if running.
  8. Now, from the Startup type dropdown menu, select the Disabled option.
  9. Click the Apply, then an OK button.
  10. Restart the computer.

Once you’ve completed these steps, the Windows Search service should be permanently disabled. To confirm, open the service and check the Windows search service status.

Whenever you need to enable this service, you have to come back to the Windows Search service properties, then select the startup type Automatic.

I hope this guide is helpful for you. If you have any questions, feel free to comment below.

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