How to Troubleshoot SearchProtocolHost.exe High CPU Usage Issue in Windows Computers

  • Windows Search Indexer is a service that maintains an index of most files on your computer.
  • It updates indexes automatically, without the need for user intervention.
  • High CPU usage of SearchProtocolHost.exe is caused by the fact that the indexer can’t find certain files in the system.
  • Therefore, the process is heavily loaded, which consumes a lot of system resources.
  • Restart your computer to make sure the error is resolved.

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What Is Microsoft Windows Search Filter Host

As a component of Windows Search Indexer, Windows Search Filter Host enables file search and indexing on Windows PCs.

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The Service Host: DNS Client system process was causing me to get 100% CPU usage, which I could not resolve. I posted about this in these forums about 2 weeks ago.

Mini Search Host

This post from MiniTool will give you detailed information about SearchProtocolHost.exe and how to fix its high CPU usage in Windows 10. If you don’t know what it is or why it consumes so much CPU, then you’ll like this post.

Search Host.exe

If you opened up task manager and noticed SearchFilterHost.exe running, what was it? In fact, since this is not usually a virus, you are probably in the clear. It was included with every Windows installation since XP, but wasn’t much known until Vista. Windows Search is assisted by this little executable. It is part of Microsoft’s system service.

I had just installed Windows 10 Enterprise 1607 (build 14393.105) on my computer, and I noticed that the fans were always running. Discuss and support Microsoft Windows Search Filter Host/Search Protocol Host have high CPU usage even after… in Windows 10 BSOD Crashes and Debugging to resolve the problem; Hi, I had just installed Windows 10 Enterprise 1607 (build 14393.105). Taking a look… Discussion in ‘Windows 10 BSOD Crashes and Debugging’ starting May 18, 2019.

Beginning from Windows Vista, modern Windows operating systems has greatly enhanced its search algorithm where the search process is now not only faster, but users can also easily search for almost all kind of files, documents, pictures, videos, emails and contacts in Microsoft Outlook, and even commands or application programs’ executable. To achieve the fast searching speed, indexing service plays a pivotal role. Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10 and so on starts to crawl and index files on hard disks right after installed with a low priority background process. If you notice that your hard drive activity LED light is constantly flashing even if computer is idle, this is probably due to indexer at work.

It’s called AMDdow.exe. You can find it in C:/Program Files/AMD/CNext/CNext/amdow.exe (Advanced Micro Devices, Inc.)

It is likely that you are already familiar with the problem of using a lot of CPU power on your computer due to the “SearchProtocolHost.exe” process. This process is related to indexing and is part of the Windows search engine.

Microsoft Windows Search Indexer High Cpu Usage

In this article, we will explain how to solve problems resulting in high CPU consumption caused by corrupted index databases, misconfigured lookup locations, and misconfigured indexing types.

Search Host Exe

In the C:/Windows/System32 folder, you can find the executable file SearchFilterHost.exe.

NTFS USN journal hooks into the SearchIndexer.exe process to provide instant, up-to-date search results for the file system. As soon as a change is written to the file system, NTFS USN journal records an immediate entry. Upon monitoring the journal, SearchIndexer.exe launches the following two temporary processes in response to the latest entry:

As part of Windows Search Indexer, your computer’s files are indexed to increase the performance of your search. As with most books, the computer maintains an index on different disks that is similar to the index found in some books. This index updates automatically without the need for the user to intervene.

What causes SearchProtocolHost.exe’s high CPU usage?

Trying these two methods will not resolve the CPU bottleneck caused by SearchProtocolHost.exe. Alternatively, you may disable the Windows Search service. This will disable Windows Search, but you will be unable to run it.

Because the indexer cannot find some files, SearchProtocolHost.exe consumes much CPU power due to its heavy load.

How to fix SearchProtocolHost.exe high CPU usage?



Updated: February 2024

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To use SFC, launch it

  1. Type cmd in the search bar, then right-click Command Prompt and select Run as administrator.
  2. You can start the process by typing DISM.exe /Online /Cleanup-image /Restorehealth in the window that appears.
  3. Press Enter to run SFC scanning after waiting for the process to finish.
  4. Ensure that SearchProtocolHost.exe consumes the same amount of CPU after restarting your computer.

Disabling the Windows Search Service

  1. The Run field will appear when you press Win + R.
  2. In the services window, type services.MSC and click OK.
  3. Select Properties from the list when you find Windows Search.
  4. To change the startup type, click Disabled. To save your changes, click Apply and OK.
  5. The error should be resolved after restarting your computer.

Changing the indexing settings

  1. If you wish to open the Indexing Options window, enter the indexing options in the search bar.
  2. You can open the Indexed Locations by clicking Edit on the bottom of the window that opens.
  3. If it restarts every time, click Show all locations and disable large locations (for example, disable the local C: drive).
  4. Your changes will be saved when you click OK.
  5. Ensure SearchProtocolHost.exe continues to use a lot of CPU after rebooting.



RECOMMENATION: Click here for help with Windows errors.

Frequently Asked Questions

SearchProtocolHost.exe is part of the Windows Indexing Service, an application that indexes files on the local disk to make them easier to find. It is an important part of the Windows operating system and must not be disabled or removed.

  1. Right-click on the Start button and select Control Panel.
  2. Open Mail.
  3. Select the old mail profile for the account specified in the credentials window for Microsoft Windows Search Protocol Host and click Delete.

  1. Reboot the system.
  2. Stop or restart processes.
  3. Update the drivers.
  4. Scan for malware.
  5. Power options.
  6. Find specific instructions online.
  7. Reinstall Windows.

Host Process For Oma Dm Client High Cpu

This week back to the Windows platform. This week is again about managing local administrators on Windows 10 devices. Even in a modern world, there can still be a need for managing the local administrators on a Windows 10 devices and often that still requires more flexibility than provided with the default Azure AD functionality. I’ve also discussed managing local administrators already multiple times – either by using a Windows 10 MDM policy setting or by using proactive remediations – and this time it’s about a new method that became available in Windows 10, version 20H2 and later. That method is a new Windows 10 MDM policy setting. In this post, I’ll provide an introduction to that new policy setting and I’ll show how to …

Microsoft Windows Search Protocol Host

To launch the Services console, press Win + R, type services.msc, and hit Enter. Right-click on the Windows Search service, click Properties, and select Stop under the Service status section. Then select Disabled as the Startup type under the Start button in the Properties window.

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Mark Ginter is a tech blogger with a passion for all things gadgets and gizmos. A self-proclaimed "geek", Mark has been blogging about technology for over 15 years. His blog, techquack.com, covers a wide range of topics including new product releases, industry news, and tips and tricks for getting the most out of your devices. If you're looking for someone who can keep you up-to-date with all the latest tech news and developments, then be sure to follow him over at Microsoft.