What is SearchFilterHost.exe?

SearchFilterHost.exe is Microsoft Windows Search Filter Host.

This file is part of Windows® Search. SearchFilterHost.exe is developed by Microsoft Corporation. It’s a system and hidden file. The SearchFilterHost.exe file is used by Windows search and indexing services. SearchFilterHost.exe is usually located in the %WINDOWS% sub-folder and its usual size is 70,656 bytes.

How to Fix SearchFilterHost.exe High CPU Usage

SearchFilterHost.exe is known to consume excessive CPU and cause up to 100% overall CPU usage on computers running Windows Vista. This problem can be fixed in two ways: a) disable the indexing of .xml files; b) disable indexing altogether if you don’t use Windows Search.

 To disable the indexing of .xml files: 

1. Click on Start and go to the Control Panel
2. Open Indexing Options and go to the Modify tab
3. Exclude .xml files and click OK 

To disable indexing: 

1. Click on Start and type services.msc in the Search bar. Hit Enter
2. Locate the Windows Search service, right-click on it and go to Properties
3. Select Disabled in the Startup type dropdown box
4. Click Apply, then click OK and reboot your computer