Most antivirus programs identify msd.exe as malware—e.g. Microsoft identifies it as TrojanDownloader:Win32/Renos.JJ, and TrendMicro identifies it as TROJ_RENOS.BHAM.
The msd.exe file is a software component of Musicsoft Downloader by Yamaha.
Msd.exe is an executable file that runs the Musicsoft Downloader, a program that lets users transfer music files and MIDI data between a digital instrument and a PC. This is not a critical Windows component and should be removed if known to cause problems. The MusicSoft Downloader program is available for free from the Yamaha website as a program that lets users transfer files such as music, MIDI data and firmware updates to Yamaha's digital instruments using a simple MIDI or USB-MIDI connection. The program also lets users browse and download online music content. The Yamaha Corporation is a Japanese multinational corporation that offers numerous products and services in the field of electronics, musical instruments, motorcycles and power sports equipment. The company was established in 1887 by Torakusu Yamaha, originally as the Nippon Gakki Company to manufacture pianos and reed organs. It was only after World War II that the company began to develop motorcycles. The company is currently headquartered in Hamamatsu, Shizuoka, Japan.
MsD stands for Musicsoft Downloader
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Description: Msd.exe is not essential for Windows and will often cause problems. The msd.exe file is located in the C:\Windows folder.
Known file sizes on Windows 10/8/7/XP are 144,896 bytes (60% of all occurrences), 131,584 bytes or 140,800 bytes.
The process has no file description. The program is not visible. It is located in the Windows folder, but it is not a Windows core file. It is not a Windows system file. The application uses ports to connect to or from a LAN or the Internet. Msd.exe is able to monitor applications. Therefore the technical security rating is 84% dangerous.
Recommended: Identify msd.exe related errors
If msd.exe is located in a subfolder of the user's profile folder, the security rating is 26% dangerous. The file size is 1,658,368 bytes. The program has a visible window. The software has no file description. The msd.exe file is not a Windows core file. The process listens for or sends data on open ports to a LAN or the Internet. Msd.exe is able to connect to the Internet and record keyboard and mouse inputs.
Important: You should check the msd.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.
The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active msd process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the msd.exe on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.
A clean and tidy computer is the key requirement for avoiding PC trouble. 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.