What is ose.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 ose.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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Ose.exe file information

Windows Task Manager with ose
Ose.exe process in Windows Task Manager

The process known as Office Source Engine

belongs to software Office Source Engine or Microsoft Office Professional or Microsoft Office Standard (version 2010) or Microsoft Office Enterprise (version 2007) or Microsoft Office Shared MUI (version 2007) or Microsoft Office Professional Edition or Microsoft Office Professional Plus (version 2013) or Microsoft Office Word Viewer

by Microsoft (

Description: Ose.exe is not essential for Windows and will often cause problems. Ose.exe is located in a subfolder of "C:\Program Files\Common Files" or sometimes in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 145,184 bytes (45% of all occurrences), 89,136 bytes and 5 more variants. 
The program is not visible. The file is not a Windows system file. The ose.exe file is certified by a trustworthy company. The software can be uninstalled in the Control Panel. Therefore the technical security rating is 19% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you run into problems with ose.exe, you can remove the entire program Microsoft Office Professional or Microsoft Office Enterprise using Windows Control Panel.

Recommended: Identify ose.exe related errors

Important: Some malware camouflages itself as ose.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example Virus:Win64/Expiro.AI (detected by Microsoft), and W64.Xpiro.F (detected by Symantec). Therefore, you should check the ose.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

this belongs in your prefetch folder, and it is a microsoft office search engine
this file is sketchy as all get out.. comes and goes at will. delete it.
Service installed as part of the Office 2003 installation from CD
  Not Interested  
Unfortunately this is probably both necessary and dangerous. Used to install and repair Office 2003, but may allow Microsoft to spy on you, install DRM, or disable your system if they feel you are unlicensed. If it is not installed, you cannot apply a new service pack. I recommend renaming it to norunose.exe until you want to install a new service pack, then renaming it back temporarily.
This program is part of the Microsoft Ofice and should not be terminated
  Rodrigo Lobo Schmidt  
remote access
Office updates do not work if OSE.EXE is terminated or removed
  Ed Headset   (further information)
I do not have MS Office but I do have both word and excel viewers. their .exe's are located in a sub-dir MSOCache and there is a copy of the .exe in each Directory
  Jon   (further information)
Nothing to do with service packs -- It is about Office UPDATES: If you disable the Ose.exe file, Microsoft Office updates do not install when you use Microsoft Windows Server Update Services or the Microsoft Update Web site to deploy software updates and hotfixes to computers in the organization
  Herb Martin   (further information)
It is a necessary evil and a piece of shit because removing it forces all vista updates to not install afterwards.
This is part of the Microsoft Office suite. Note: spelling of exe and location drive://Program Files\Common Files\Microsoft Shared\Source Engine\OSE.EXE.
this .exe starts connection to - looks like "original" spyware
model emit capita intensity past
  zaynebetti   (further information)
This service lay dormant in office 2007 until I enabled the "Download a file periodically to help determine system problems" option in office Trust Center, Privacy Options. I suppose if you disable that option it that ose.exe service will not be started.
ose.exe is needed to download microsoft office updates. If you disable the service or delete the file, you will get a Code 80070643 error.
  VBNetDude   (further information)
Typical Microsoft bloatware not needed unless you want microsoft constantly connecting to your pc and updating things, if you want that then keep it, I disabled it in autoruns and office still works fine.
Required for MS office installation
Office updater
Microsoft states that this to receive security updates for Office, i.e. Microsoft Updates
  Jack McGavin   (further information)

Rating chart

Summary: Average user rating of ose.exe: based on 25 votes with 19 user comments. 9 users think ose.exe is essential for Windows or an installed application. 4 users think it's probably harmless. 8 users think it's neither essential nor dangerous. 2 users suspect danger. 2 users think ose.exe is dangerous and recommend removing it. 3 users don't grade ose.exe ("not sure about it").

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Best practices for resolving ose issues

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

ose.exe [all]