What is x1.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 x1.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 x1.exe related errors

X1.exe file information

The process known as x1.exe belongs to software X1 by X1 Technologies (

Description: X1.exe is not essential for the Windows OS and causes relatively few problems. X1.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 13,179,660 bytes (40% of all occurrences), 4,964,352 bytes, 4,756,664 bytes or 4,962,304 bytes. 
There is no file information. The program is not visible. The program is loaded during the Windows boot process (see Registry key: User Shell Folders). The x1.exe file is not a Windows system file. X1.exe is able to record keyboard and mouse inputs, monitor applications and manipulate other programs. Therefore the technical security rating is 54% dangerous; however you should also read the user reviews.

Uninstalling this variant: If you run into problems with x1.exe, you may also want to uninstall X1 from your computer using the Control Panel applet Uninstall a Program.

Recommended: Identify x1.exe related errors

If x1.exe is located in a subfolder of C:\, the security rating is 74% dangerous. The file size is 3,651,072 bytes. It is a file with no information about its developer. The program is not visible. The application listens for or sends data on open ports to a LAN or the Internet. It is not a Windows core file.

Important: Some malware camouflages itself as x1.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the x1.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

An indexing program to sort E-mails, contacts,attachments and contacts.
  Sadius2001   (further information)
it is a software origram called X1
  Pat   (further information)
It is the darn local search engine available
  Andy Harvey  
It's great program
  David Metzel  
X1.exe is the basic search engine used by Yahoo, without all the bells and whistles. It is an extremely comprehensive desktop search engine that the developers have made available free for personal use. Optionally, the user can choose to allow the program to "phone home" with information to help with further development.
  Brian Richardson   (further information)

Summary: Average user rating of x1.exe: based on 5 votes with 5 user comments. 4 users think x1.exe is essential for Windows or an installed application. One user thinks it's neither essential nor dangerous.

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Best practices for resolving x1 issues

A clean and tidy computer is the key requirement for avoiding problems with x1. 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 x1.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

x1.exe [all]