What is msmdsrv.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 msmdsrv.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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Msmdsrv.exe file information

Windows Task Manager with msmdsrv
Msmdsrv.exe process in Windows Task Manager

The process known as Analysis server or Microsoft SQL Server Analysis Services or SQL Server Analysis Services (MSSQLSERVER) or OLAP server or Microsoft SQL Server (version 2005 Analysis Services)

belongs to software Microsoft SQL Server Analysis Services or Microsoft SQL Server (version 2005, 2005 Tools, 2005 Books Online, 2005 Backward, 2005 Analysis Services) or Microsoft SQL Server Native or Microsoft SQL Server OLAP Services

by Microsoft (

Description: Msmdsrv.exe is not essential for the Windows OS and causes relatively few problems. Msmdsrv.exe is located in a subfolder of "C:\Program Files" (normally C:\Program Files\Microsoft Analysis Services\Bin\). Known file sizes on Windows 10/8/7/XP are 1,732,667 bytes (50% of all occurrences), 13,179,660 bytes, 1,966,080 bytes, 1,823,300 bytes or 1,196,544 bytes. 
The program is not visible. The msmdsrv.exe file is not a Windows core file. The program uses ports to connect to or from a LAN or the Internet. Msmdsrv.exe is able to monitor applications. Therefore the technical security rating is 54% dangerous, however you should also read the user reviews.

Uninstalling this variant: You can uninstall Microsoft SQL Server 2000 Analysis or Microsoft SQL Server 2000, or try to get help from the software vendor. Click on Microsoft SQL Server 2000 Analysis or Microsoft SQL Server 2000 in the Windows Control Panel (Software or Programs section) to uninstall it, or click on to visit the vendor's website.

Recommended: Identify msmdsrv.exe related errors

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

Part of MS SQL Server Online Analytical Processing Engine
  Wilco Oosterom   (further information)
When invoked it can consume 100% of the cpu and you can not stop the service after it is started
MS SQL OLAP Services
  Who cares  
MSSQLServerOLAPService for Microsoft SQL Server 2000 or 2005
Microsoft SQL Server OLAP
  Damien Jorgensen  
SQL Server Analysis Services (MSSQLSERVER)

Rating chart

Summary: Average user rating of msmdsrv.exe: based on 19 votes with 6 user comments. 17 users think msmdsrv.exe is essential for Windows or an installed application. 2 users suspect danger. One user is not sure about it.

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Best practices for resolving msmdsrv issues

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

msmdsrv.exe [all]