What is mobsync.exe?

The genuine mobsync.exe file is a software component of Microsoft Windows Operating System by Microsoft.
A synchronization utility built into Microsoft Windows, this process is activated when a Windows Phone is plugged into your PC. It primarily syncs data back and forth between your PC and mobile device. It has has the ability to run as a background process and store offline data for Internet Explorer to provide device synchronicity between your PC and Windows Phone.

MobSync stands for Mobile Synchronization

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 mobsync.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 mobsync.exe related errors

Mobsync.exe file information

Windows Task Manager with mobsync
Mobsync.exe process in Windows Task Manager

The process known as Microsoft Sync Center or Microsoft Synchronization Manager belongs to software Microsoft Windows Operating System or Microsoft Synchronization Manager by Microsoft (

Description: Mobsync.exe is an important part of Windows, but often causes problems. Mobsync.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 95,744 bytes (69% of all occurrences), 101,376 bytes and 6 more variants. 
Mobsync.exe is a Windows system file. The file is a Microsoft signed file. The program has no visible window. Therefore the technical security rating is 3% dangerous, however you should also read the user reviews.

Recommended: Identify mobsync.exe related errors

If mobsync.exe is located in a subfolder of C:\Windows, the security rating is 16% dangerous. The file size is 102,400 bytes. The file is a trustworthy file from Microsoft. The program is not visible. It is not a Windows system file.

External information from Paul Collins:
There are different files with the same name:

Important: Some malware disguises itself as mobsync.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the mobsync.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

Slows down my computer extremely during start. Slows down IE and Firefox.
Mob Sync means "mobile syncronizer" - It synchronizes your windows phone with your pc.
  Informatie_de_PC   (further information)
Mobile and Network S(t)ync. It is very stupid and annoying, but I need it at work to sync my computer with the network, unfortunately. I wish that we used Linux!
  Fiskwagarn   (further information)
It syncs offline files during logon and logoff times. This is not a service as some one quoted above.
  Claudia   (further information)
It´s stealing my RAM
Controls Windows Mobile Phones from Your Dektop
  Kris Watson  
addition to active sync, sync folders/files on sd-card etc. with folders/files on the PC Makes active sync more useful
  Gerd B.  
It syncronizes offline webpages etc. on the internet upon logon/logoff. If you don't use onffline web pages/offline email, then dissable it.
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of mobsync.exe: based on 41 votes with 9 reviews. 19 users think mobsync.exe is essential for Windows or an installed application. 2 users think it's probably harmless. 7 users think it's neither essential nor dangerous. 5 users suspect danger. 8 users think mobsync.exe is dangerous and recommend removing it. 3 users don't grade mobsync.exe ("not sure about it").

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Best practices for resolving mobsync issues

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

mobsync.exe [all]