What is IndexSearch.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 IndexSearch.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.

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IndexSearch.exe file information

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

The process known as PaperPort IndexSearch or PaperPort (version 8.0 SE) belongs to software PaperPort (version 8.0 SE) or ScanSoft PaperPort (version 11) or Visioneer Strobe Pro or Nuance PaperPort (version 12) by ScanSoft ( or Nuance Communications (

Description: IndexSearch.exe is not essential for Windows and will often cause problems. The IndexSearch.exe file is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 40,960 bytes (31% of all occurrences), 46,632 bytes, 36,864 bytes, 46,368 bytes or 46,952 bytes. 
The program has a visible window. The process starts when Windows starts (see Registry key: MACHINE\Run). The IndexSearch.exe file is not a Windows core file. You can uninstall this program in the Control Panel. Therefore the technical security rating is 7% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case you experience problems using IndexSearch.exe, you may want to do the following:
  • search the support area on the Scansoft website
  • update [1][2] to a possibly corrected version
  • uninstall the software ScanSoft PaperPort 11 or PaperPort using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program)

Recommended: Identify IndexSearch.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as IndexSearch.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the IndexSearch.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

ScanSoft PaperPort
indexsearch.exe is associated with PaperPort scanner software from ScanSoft

Summary: Average user rating of IndexSearch.exe: based on 2 votes with 2 user comments. 2 users think it's neither essential nor dangerous.

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Best practices for resolving IndexSearch issues

A clean and tidy computer is the key requirement for avoiding problems with IndexSearch. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the IndexSearch.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

IndexSearch.exe [all]