What is mms.exe?

The genuine mms.exe file is a software component of Acronis True Image by Acronis.
Acronis True Image is a disk imaging utility and backup utility. Mms.exe is an intermediary process that communicates requests between the Acronis family of products. This is a known process that is trusted, however, though it is not a Windows component removing or disabling it may cause problems with Acronis True Image.

Acronis True Image offers data protection services such as system-wide backups of the entire system, including the operating system, system settings, user accounts, applications, files, etc., as well as archival, access and recovery. Backups may be transferred across different systems regardless of the make or model, and can even be uploaded to the cloud to be accessed from anywhere at anytime. This program is available for the Microsoft, OSX, iOS, and Android platforms.

Acronis International is a Swiss private software company that designs and develops solutions in cloud-based and on-site data access, backup, and disaster recovery software products. Acronis mainly serves small and medium businesses, as well as home users. The company was founded in 2003 by Serguei Beloussov, Ilya Zubarev, Stanislav Protassov and Max Tsyplyaev with a focus on disk partitioning and boot loader software. The company moved into its current field soon after. Acronis is headquartered in Schaffhausen, Switzerland.

MMS stands for Managed Machine Service

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 mms.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 mms.exe related errors

Mms.exe file information

The process known as Acronis Managed Machine Service belongs to software Acronis Backup (version 11.5 Agent Core) or Acronis Backup & Recovery (version 11) by Acronis (

Description: Mms.exe is not essential for the Windows OS and causes relatively few problems. The mms.exe file is located in a subfolder of "C:\Program Files (x86)" (usually C:\Program Files (x86)\Acronis\BackupAndRecovery\). Known file sizes on Windows 10/8/7/XP are 8,693,896 bytes (33% of all occurrences), 11,194,312 bytes or 8,192 bytes. 
The program has no visible window. Mms.exe is not a Windows core file. The program can be removed using the Control Panel's Add\Remove programs applet. Mms.exe is a Verisign signed file. The mms.exe file is certified by a trustworthy company. Mms.exe is able to hide itself and monitor applications. Therefore the technical security rating is 25% dangerous.

Uninstalling this variant: If you still experience problems with mms.exe, you can do the following:
  • visit the website
  • safely remove the program using the uninstall program of Acronis Backup 11.5 Agent Core or Acronis Backup & Recovery 11 (Control Panel ⇒ Uninstall a Program)

Recommended: Identify mms.exe related errors

External information from Paul Collins:

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

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

mms.exe [all]