What is maintenanceservice.exe?

The genuine maintenanceservice.exe file is a software component of Mozilla Firefox by Mozilla.
Mozilla Firefox is a free and open-source Internet browser application. Maintenanceservice.exe runs a process that updates Firefox without having the user provide manual permissions through the Windows UAC (user access control). This is not an essential Windows process and can be disabled if known to create problems.

Mozilla Firefox is a free, multi-platform, and open-source Internet browser created and developed by the Mozilla Foundation. Firefox was originally written in 2002 under the name, "Phoenix", and eventually released in 2004 by members of the Mozilla community. It is regarded as the spiritual successor of Netscape Navigator. Mozilla Firefox supports the Windows, Mac OS X, Linux, iOS, and Android platforms.

Mozilla is a community that develops free software. The community is best known for the web browser, Firefox. Mozilla was created by the Netscape Communications Corporation in 1998 as a project to assist with the development of the Mozilla Application Suite. The name, Mozilla, is an amalgam of "Mosaic" and "Godzilla". The community is aided by the Mozilla Foundation, a non-profit organization created exclusively for the benefit of Mozilla.

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 maintenanceservice.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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Maintenanceservice.exe file information

Windows Task Manager with maintenanceservice
Maintenanceservice.exe process in Windows Task Manager

The process known as Mozilla Maintenance Service belongs to software Firefox or Thunderbird by Mozilla Foundation (

Description: Maintenanceservice.exe is not essential for Windows and will often cause problems. Maintenanceservice.exe is located in a subfolder of "C:\Program Files (x86)"—usually C:\Program Files (x86)\Mozilla Maintenance Service\. Known file sizes on Windows 10/8/7/XP are 146,888 bytes (22% of all occurrences), 119,408 bytes and 21 more variants. 
The service can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. It is not a Windows core file. There is no file information. It is digitally signed. The application is not active. Maintenanceservice.exe is able to monitor applications. Therefore the technical security rating is 7% dangerous; but you should also compare this rating with the user reviews.

Uninstalling this variant: If problems with Mozilla Maintenance Service or Cliqz Maintenance Service occur, you can also completely remove it (Control Panel ⇒ Uninstall a Program) or use the software publisher's support site.

Recommended: Identify maintenanceservice.exe related errors

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

Firefox und Thunderbird installieren einen optionalen Dienst, der Mozilla-Wartungsdienst genannt wird (englisch: Mozilla Maintenance Service). Er ermöglicht die automatische Installation von Updates, ohne dass Sie zuvor im Dialog der Windows-Benutzerkontensteuerung (UAC) auf Ja klicken müssen.
  Regenbrecht   (further information)

Summary: Average user rating of maintenanceservice.exe: based on 1 vote with 1 user comment. One user thinks it's neither essential nor dangerous.

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Best practices for resolving maintenanceservice issues

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

maintenanceservice.exe [all]