What is SearchIndexer.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the SearchIndexer.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

Click to Run a Free Scan for SearchIndexer.exe related errors

SearchIndexer.exe file information

Windows Task Manager with SearchIndexer
SearchIndexer.exe process in Windows Task Manager

The process known as Microsoft Windows Search Indexer or Windows Appliction or Indexeur Microsoft Windows Search or Microsoft Windows Search-Indexerstellung

belongs to software Microsoft Windows Operating System or Windows Search or Windows Application or Windows Search, Windows Search, Windows Search or Windows Indexer

by Microsoft (

Description: The original SearchIndexer.exe from Microsoft is an important part of Windows, but often causes problems. SearchIndexer.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 439,808 bytes (39% of all occurrences), 427,520 bytes and 23 more variants. 
The program is not visible. The SearchIndexer.exe file is a Microsoft signed file. Therefore the technical security rating is 10% dangerous, however you should also read the user reviews.

Recommended: Identify SearchIndexer.exe related errors

Viruses with the same file name

Is SearchIndexer.exe a virus? No, it is not. The true SearchIndexer.exe file is a safe Microsoft Windows system process, called "Microsoft Windows Search Indexer". However, writers of malware programs, such as viruses, worms, and Trojans deliberately give their processes the same file name to escape detection. Viruses with the same file name are for instance Trojan.Generic.9580579 (detected by F-Secure), and not-a-virus:RiskTool.Win32.BitCoinMiner.ggn or not-a-virus:RiskTool.Win32.BitCoinMiner.fqs (detected by Kaspersky).
To ensure that no rogue SearchIndexer.exe is running on your PC, click here to run a Free Malware Scan.

How to recognize suspicious variants?

Important: Some malware disguises itself as SearchIndexer.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the SearchIndexer.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

I just reduced the things it indexes and got 25% of my CPU back (has been higher), in fact it now indexes nothing. XP worked fine without it in fact it was faster despite have 1/4 the CPU speed. As a computer programer I am pretty sure for 99% of user this will only make things. It is like indexing everything in your home so you can find it faster, you shift so much stuff around you can't find anything. Pile of crap. It like defragging, makes no difference and wears the bearings of your hard drive into dust.
  breon_the _great  
Microsoft's attempt to collect data on users by indexing their entire hard drive. Inefficient, unnecessary, and a privacy nightmare. Better to disable Windows Search and install a 3rd-party app, unless you are lucky enough to be using XP or older.
pc becomes very slowly and RAm is full when active. Just kill it and good...
it is simply windows search service. Do not bother about it
    (further information)
This is a Windows program which improves Windows Search Engine. Used deribelately it could be really useful and unexpectedly helpful. The only thing you need is to configure it.
  lapsikoss   (further information)
Come on people! Its part of Windows. Its a pain in the but but you shouldnt take it out. You can modify it to only index a few needed things. Look it up in the net.
  Marvin Von Renchler  
It's purpose is to help you to find your files fast. But it continously reads disks and consumes memory and cpu. Just a useless MS tool, should be disabled..
I know that it totally killed my HP mini. The update also turned all the services that i disabled previously back to automatic. took over 10min just to get to the run prompt. be patient.
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of SearchIndexer.exe: based on 65 votes with 9 reviews. 11 users think SearchIndexer.exe is essential for Windows or an installed application. 3 users think it's probably harmless. 32 users think it's neither essential nor dangerous. 14 users suspect danger. 5 users think SearchIndexer.exe is dangerous and recommend removing it. 5 users don't grade SearchIndexer.exe ("not sure about it").

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Best practices for resolving SearchIndexer issues

A clean and tidy computer is the key requirement for avoiding problems with SearchIndexer. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the SearchIndexer.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

SearchIndexer.exe [all]