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What is mpoav.dll?

Part of Microsoft Malware Protection by Microsoft

What is it?

IOfficeAntiVirus Module scans for malware when opening a file. Microsoft Malware Protection is part of Microsoft Security Essentials suite of anti-virus products including Windows Defender and Microsoft Malware Protection. It intagrates with Microsoft Office 2007/2010 as an anti-virus plugin which is designed to scan downloaded files and document attachments for malware and takes actions if a virus or trojan is discovered.

What if I disable Microsoft Malware Protection?

If this is disabled then Microsoft Malware Protection will not be able to protect Microsoft Office from malware and other viruses. Keeping this enabled is recommended.
Description of mpoav.dll from Microsoft
Windows Defender is software that helps protect your computer against pop-ups, slow performance, and security threats caused by spyware and other unwanted software by detecting and removing known spyware from your computer. Windows Defender features Real-Time Protection, a monitoring system that recommends actions against spyware when it's detected, minimizes interruptions, and helps you stay productive.
Download Boost and enjoy your PC. Speed up Microsoft Malware Protection and optimize your PC.

How is mpoav.dll loaded?

IOffice antivirus plugin - mpoav.dll has a CLSID (globally unique identifier) of {2781761E-28E1-4109-99FE-B9D127C57AFE} with and identifier of CLSID\{2781761E-28E1-4109-99FE-B9D127C57AFE}\Implemented Categories\{56FFCC30-D398-11D0-B2AE-00A0C908FA49}. This used by an antivirus scanner to interact with a Microsoft Office application to active an antivirus scan of a file such as a Word or Excel document of embedded attachments.
Microsoft Malware Protection is loaded by:

Community

What is the community is seeing?What is the community is doing?
About 0.5% of all Boost users have the mpoav.dll file.Of the 0.5% of mpoav.dll users, 11.1% have disabled it.
Typical file (disk image) location:
C:\Program Files\microsoft security client\antimalware\mpoav.dll

Are there other versions of Microsoft Malware Protection?

Why are multiple of the same versions listed?

What programs install mpoav.dll?

Microsoft Antimalware by Microsoft Corporation - Microsoft Antimalware is an antivirus software (AV) product that fights malware (malicious software), including computer viruses, spyware, Trojan horses and rootkits. The software runs on Windows XP, Windows Vista and Wi
Install path: C:\Program Files\Microsoft Security Client\Antimalware
Microsoft Security Essentials by Microsoft Corporation - Microsoft Security Essentials is an antivirus software product that provides protection against different types of malware such as computer viruses, spyware, rootkits and Trojan horses. It runs on Windows XP, Windows Vis
Program URL: go.microsoft.com/fwlink/?LinkID=195291&mkt=en-us
Install path: C:\Program Files\Microsoft Security Client
Size: 21.86 MB
Microsoft Security Essentials Prerelease by Microsoft Corporation - The Microsoft Security Essentials Prerelease program allows users to run the latest & greatest versions of Security Essentials before they are publicy available.
Program URL: go.microsoft.com/fwlink/?LinkID=228940&mkt=en-us
Install path: C:\Program Files\Microsoft Security Client
Size: 25.56 MB
Microsoft Forefront Endpoint Protection by Microsoft Corporation - Microsoft Forefront is a family of line-of-business security software that are designed to help protect computer networks, network servers (such as Microsoft Exchange Server and Microsoft SharePoint Server) and individu
Program URL: go.microsoft.com/fwlink/?LinkID=195301&mkt=en-us
Install path: C:\Program Files\Microsoft Security Client
Size: 28.04 MB
System Center 2012 Endpoint Protection by Microsoft Corporation
Program URL: go.microsoft.com/fwlink/?LinkId=225780&mkt=es-es
Program help URL: go.microsoft.com/fwlink/?LinkId=225780&mkt=en-us
Install path: C:\Program Files\Microsoft Security Client
Size: 21.98 MB
Windows Intune Endpoint Protection by Microsoft Corporation
Program URL: go.microsoft.com/fwlink/?LinkID=206391&mkt=en-us
Install path: C:\Program Files\Microsoft Security Client
Size: 22.1 MB
Microsoft Security Client by Microsoft Corporation - Microsoft Security Client for Microsoft Security Essentials is an antivirus software product that provides protection against different types of malware such as computer viruses, spyware, rootkits and Trojan horses. Buil
Install path: C:\Program Files\Microsoft Security Client\

What else is related?

What Windows OS versions does this run on?

Microsoft Windows XP (5.1.2600.131072)
Microsoft Windows XP (5.1.2600.196608)
Windows Vista (TM) Home Premium (6.0.6001.65536)
Windows Vista (TM) Business (6.0.6002.131072)
Windows Vista (TM) Home Basic (6.0.6002.131072)
Windows Vista (TM) Home Premium (6.0.6002.131072)
Windows Vista (TM) Ultimate (6.0.6002.131072)
Windows 7 Starter (6.1.7600.0)
Windows 7 Ultimate (6.1.7600.0)
Windows 7 Enterprise (6.1.7601.65536)
Windows 7 Home Premium (6.1.7601.65536)
Windows 7 Professional (6.1.7601.65536)

About Microsoft Corporation

Microsoft, founded in 1975 by Bill Gates and Paul Allen, is a veteran software company, best known for its Microsoft Windows operating system and the Microsoft More...
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File details

File name: mpoav.dll
Publisher: Microsoft Corporation (verified)
Name: Microsoft Malware Protection
Description: IOfficeAntiVirus Module
Version: 4.2.0223.0
Size: 76.98 KB
Original file name: MpOAV.dll

Digital certificate

Certificate authority: Microsoft Corporation
Expiration date: 10/26/2013

IOffice antivirus plugin details

CLSID: {2781761E-28E1-4109-99FE-B9D127C57AFE}
Command: CLSID\{2781761E-28E1-4109-99FE-B9D127C57AFE}\Implemented Categories\{56FFCC30-D398-11D0-B2AE-00A0C908FA49}

Image hashes

MD5: 41c34f15be216ac2233694376ca0ff9e
SHA-1: 2fa2761084c0cab467960ac401ba012f7d3a7e66
SHA-256: 95679dee109c39e18ce4cfdf4d9f583d964b41758ad628507b8e4969f3f82905

PE image details

CLR assembly: Yes
CLR NGENed: No
Langauge*: Microsoft Visual C# / Basic .NET
File packed: No
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