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What does the SearchProtocolHost.exe file do?

The SearchProtocolHost.exe process is also known as Microsoft Windows Search Protocol Host and is a part of Microsoft Windows Operating System or, as the case may be, Windows Search. This software is produced by Microsoft (www.microsoft.com). An obsolete or defective version of SearchProtocolHost.exe can cause problems for your computer that can range from slowness to error messages such as these:

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What you should know about SearchProtocolHost.exe Microsoft Windows Search Protocol Host

The original SearchProtocolHost.exe file is definitely a Windows system file, but many viruses use the same name in order to remain unnoticed. The file SearchProtocolHost.exe is found in the C:\Windows\System32 directory. Frequently occurring are file sizes such as 184,832 bytes (42% of all these files), 164,352 bytes as well as 10 other variants.
The program executes in the background, and can only be terminated using Windows Task Manager. The original file was created by Microsoft. The file itself can therefore be considered trustworthy. For this reason, 10% of all experts consider this file to be a possible threat. The probability that it can cause harm is high.

A SearchProtocolHost.exe file has a 15% certainty of being dangerous if it is found in a subdirectory of C:\Windows. In this case, the file size is usually 164,352 bytes (37% of all these files), 184,832 bytes, 373,760 bytes, 185,344 bytes or, as the case may be, 249,856 bytes. The program executes in the background, and can only be terminated using Windows Task Manager. The original file by Microsoft is digitally signed. So please check the file on your computer. The file does not come from Microsoft and is not part of the operating system.

If you see this file on your hard drive or in Windows Task Manager, please make sure that it is not a malicious variant. It's a fact that many trojans try to cloak their true identity by calling themselves SearchProtocolHost.exe. With the above information or by using tools like Security Task Manager you can determine if, in your case, the file is an undesirable variant.

What do other computer users say about SearchProtocolHost?

:searchprotocolhost is spyware that comes from certain internet applications and add-ons. It slows down internet browsing performance by about 30%. some details that support this idea is that the process' priority can be changed, meaning it is not a "virgin" system process
AVG flagged it in 2 different places and firewall traced it going to ports
Part of Windows Search desktop indexing service (further information...)
Along with SearchFilterHost.exe it's part of Windows Indexing Service. You may look at Process Explorer to verify that

Summary: 7 users judge SearchProtocolHost.exe to be an essential file that should not be touched. 2 users consider it harmless. However, 9 users consider this to be a suspicious process and would like to get rid of it. For this reason, 10 users have already deleted SearchProtocolHost.exe. source: file.net

How to uninstall the program or Windows Search

SearchProtocolHost.exe Microsoft Windows Search Protocol Host fix

To remove Microsoft Windows Search Protocol Host from your computer, please follow the manual instructions below or use an automatic uninstaller product.

  1. Click the Windows Start Button. In Windows 8, look for Control Panel.
  2. Click Control Panel.
  3. Click Uninstall a program.
  4. Look for the program or Windows Search in the list of available programs.
  5. Click Uninstall.

How to tell if SearchProtocolHost.exe (Microsoft Windows Search Protocol Host) was uninstalled cleanly

After uninstalling, restart your computer. Then start Windows Explorer and see if there is still a folder with the name of the software under C:\Program Files. Be sure to check the Registry as well for remnants of Microsoft Windows Search Protocol Host. To do this, start "Regedit", then look under "HKEY_LOCAL_MACHINE" > "Software" for Microsoft Windows Search Protocol Host or the name of the producer. Always keep in mind that only a computer professional should ever directly delete entries in the Windows Registry.

What to do if a program does not uninstall

The easiest way to remove any kind of software cleanly and accurately is to use an uninstaller tool. Because the uninstaller automatically creates a backup, there is no risk of anything going wrong.

Last but not least

If Windows not working quite right for you, or if startup is taking a long time, or SearchProtocolHost.exe is causing problems for you, a good Windows diagnostic tool may very well help. This is especially effective when it comes to older computers that have accumulated vast quantities of "garbage data" as the result of many software installs and uninstalls.

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