What is CLMSServer.exe?

The genuine CLMSServer.exe file is a software component of Cyberlink PowerDVD by CyberLink.
Cyberlink PowerDVD is a media playback application. CLMSServer.exe runs a network service that enables other computers on a network to access media stored on the local computer. This is not an essential Windows process and can be disabled if known to create problems. Cyberlink PowerDVD is a media player developed to play Blu-ray and digital video discs (DVDs) for the Windows platform. The software is often shipped with optical drives and often comes preinstalled with computers manufactured by certain companies such as Acer. PowerDVD was originally released in 1998 and was one of the first Blu-ray 3D playback applications to receive certification from the Blu-ray Disc Association (BDA). CyberLink Corporation is a Taiwanese company that develops multimedia software products such as PowerDVD, MediaShow, Power Director, and more Cyberlink was founded in 1996 by Dr. Jau Huang, a professor at the National Taiwan University. In 2000, CyberLink became a publicly traded company, featuring on the Taiwanese stock exchange. Cyberlink is listed among the "200 Best under a Billion" companies by Forbes. It is currently headquartered in New Taipei, Taiwan.

CLMSServer stands for CyberLink Spark Media Services Server

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 CLMSServer.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 CLMSServer.exe related errors

CLMSServer.exe file information

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

The process known as CLMSServer or CyberLink Spark Media Server Service belongs to software Acer HomeMedia Connect or CyberLink CLMSServer or CyberLink PowerDVD (version 11) by CyberLink (

Description: CLMSServer.exe is not essential for the Windows OS and causes relatively few problems. The file CLMSServer.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 269,448 bytes (40% of all occurrences), 312,616 bytes and 8 more variants. 
The program has no visible window. The file is not a Windows system file. CLMSServer.exe is a Verisign signed file. The file is certified by a trustworthy company. Therefore the technical security rating is 38% dangerous.

Uninstalling this variant: If you have any problems with CLMSServer.exe, you may also uninstall the software CyberLink PowerDVD 11 or Acer HomeMedia Connect using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program) or go to the support area of the Gocyberlink website.

Recommended: Identify CLMSServer.exe related errors

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


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Best practices for resolving CLMSServer issues

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

CLMSServer.exe [all]