What is YServer.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 YServer.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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YServer.exe file information

The process known as YServer Module belongs to software Yahoo! Messenger by Yahoo! (

Description: YServer.exe is not essential for the Windows OS and causes relatively few problems. The file YServer.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 91,376 bytes (75% of all occurrences) or 91,640 bytes. 
The program is not visible. YServer.exe is able to record keyboard inputs. It is not a Windows core file. The application listens for or sends data on open ports to a LAN or the Internet. The program can be removed using the Control Panel's Add\Remove programs applet. The file is a Verisign signed file. The file has a digital signature. Therefore the technical security rating is 79% dangerous; however you should also read the user reviews.

Uninstalling this variant: There is a possibility to uninstall the associated program (Start > Control Panel > Uninstall a Program > Yahoo! Messenger).

Recommended: Identify YServer.exe related errors

Important: Some malware camouflages itself as YServer.exe. Therefore, you should check the YServer.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

YServer.exe is a process belonging to the Yahoo Instant Messenger application, an Internet messaging program. The process specifically deals with file transfer. This is a non-essential process. Disabling or enabling this is down to user preference
Yahoo Mesenger
  Raubar   (further information)
yserver is the utiltiy that Yahoo! messenge uses for webcams & file transfers if you use those two things on yahoo it is NEEDED
the one in yahoo is not needed for file transfer i removed it and can still send and reseve files try it yourself go to c:\programfiles\yahoo\mesinger and rename YSERVER.exe to Y SERVER.exp

Summary: Average user rating of YServer.exe: based on 5 votes with 4 user comments. 4 users think YServer.exe is essential for Windows or an installed application. One user thinks YServer.exe is dangerous and recommends removing it. One user is not sure about it.

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Best practices for resolving YServer issues

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

YServer.exe [all]