What is SynchronizationService.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 SynchronizationService.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 SynchronizationService.exe related errors

SynchronizationService.exe file information

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

The process known as COMODO SynchronizationService or COMODO BackUp belongs to software COMODO Cloud or COMODO Backup or COMODO Common by COMODO Security Solutions ( or Comodo Security Solutions (

Description: SynchronizationService.exe is not essential for the Windows OS and causes relatively few problems. SynchronizationService.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 942,328 bytes (12% of all occurrences), 569,344 bytes and 6 more variants. 
The program has no visible window. SynchronizationService.exe is not a Windows core file. SynchronizationService.exe is digitally signed. SynchronizationService.exe is able to monitor applications. Therefore the technical security rating is 29% dangerous, however you should also read the user reviews.

Uninstalling this variant: If problems with COMODO Common or COMODO BackUp come up, you can do the following:
  1) completely remove it (Control Panel ⇒ Uninstall a Program)
  2) go to the software publisher,, for advice.

Recommended: Identify SynchronizationService.exe related errors

Important: Some malware camouflages itself as SynchronizationService.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the SynchronizationService.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 Comodo BackUp, a very usefull backup utility
  meetoo   (further information)
version on my pc is part of comodo backup and appears to sync data when storing in the optional cloud storage. Stopping the service does not impact local hard drive backup
  mike buckmaster  

Summary: Average user rating of SynchronizationService.exe: based on 2 votes with 2 user comments. One user thinks SynchronizationService.exe is essential for Windows or an installed application. One user thinks it's neither essential nor dangerous.

Do you have additional information? Help other users!
What do you know about SynchronizationService.exe:
How would you rate it:
Link for more info:
Your Name:

Best practices for resolving SynchronizationService issues

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

To help you analyze the SynchronizationService.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

SynchronizationService.exe [all]