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 msosync.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.
The process known as Microsoft Office Document Cache
belongs to software Microsoft Office Shared (version 64-bit Setup, 64-bit MUI) 2010, 64-bit MUI 2010) or Microsoft Office Access Setup Metadata MUI or Microsoft Office Professional Plus (version 2010, 2013) or Microsoft Office (version 365 - en-us, 365 ProPlus - en-us, 365 - de-de) or Microsoft Lync MUI (version 2013) or Microsoft Office Shared Setup Metadata MUI or Microsoft Office Professional (version 2013) or Microsoft Office Home and Student (version 2013)
by Microsoft (www.microsoft.com).
Description: Msosync.exe is not essential for the Windows OS and causes relatively few problems. Msosync.exe is located in a subfolder of "C:\Program Files".
Known file sizes on Windows 10/8/7/XP are 720,064 bytes (21% of all occurrences), 719,672 bytes and 25 more variants.
The program is not visible. The msosync.exe file is digitally signed. The program starts when Windows starts (see Registry key: Run, RunOnce). The file is not a Windows core file. Therefore the technical security rating is 38% dangerous, however you should also read the user reviews.
Recommended: Identify msosync.exe related errors
If msosync.exe is located in a subfolder of the user's profile folder, the security rating is 59% dangerous. The file size is 720,064 bytes. It can change the behavior of other programs or manipulate other programs. The program is not visible. The file is digitally signed. The application starts when Windows starts (see Registry key: Run, RunOnce). Msosync.exe is not a Windows core file.
Important: Some malware camouflages itself as msosync.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the msosync.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.
A clean and tidy computer is the key requirement for avoiding problems with msosync. 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 msosync.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.